External preparation with effects of diffusing lung, moistening skin and relieving itching and preparation method thereof

Abstract

The external preparation is prepared from the following Chinese herbal medicines in parts by weight: 4 to 20 parts of herba artemisiae scopariae, 2 to 10 parts of cicada slough, 2 to 10 parts of cortex phellodendri, 4 to 20 parts of radix arnebiae seu lithospermi, 2 to 10 parts of radix sophorae flavescentis, 4 to 20 parts of herba agrimoniae, 4 to 20 parts of fructus xanthii, 4 to 20 parts of fructus tribuli, 4 to 20 parts of cortex moutan, 2 to 10 parts of radix rehmanniae, 4 to 20 parts of radix clematidis, 4 to 20 parts of rhizoma dioscoreae, 4 to 20 parts of spina gleditsiae, 4 to 20 parts of herba sedi and 4 to 20 parts of radix saposhnikoviae. The preparation method of the external preparation comprises the following steps: wrapping the weighed raw materials with gauze, soaking in 60-70L of cold water for 2-5 hours, boiling with big fire, decocting with small fire for 4-5 hours, closing the small fire, and taking out soup, thereby obtaining the external preparation. The external preparation developed by the invention has the effects of clearing away heat and toxic materials, promoting diuresis, dispelling wind and arresting itching, and especially has an obvious treatment effect and no toxic or side effect after being assisted by medicated bath.

Description

Technical Field

[0001] The invention belongs to the technical field of traditional Chinese medicine, and particularly relates to an external preparation with the effects of clearing the lungs, moistening the skin and relieving itching. Background Art

[0002] Itch is a common symptom of various skin diseases, causing physical and psychological distress to patients and even severely impacting their quality of life. Pruritus skin diseases include neurodermatitis, atopic dermatitis, tinea corporis, eczema, urticaria, and psoriasis. Recent research indicates that environmental, genetic, and inflammatory factors, combined with inflammatory responses, affect the skin barrier, leading to water loss and increased nerve fiber density. This, coupled with the repetitive stimulation of the "itch-scratch cycle," makes it difficult to resolve over time. Currently, Western medical treatments primarily use topical steroids. While they can provide short-term relief, long-term and excessive use can induce adverse reactions such as skin damage and atrophy, steroid-dependent dermatitis, and infection. Furthermore, pruritic skin diseases are characterized by difficulty in curing and recurring, causing significant physical and mental distress to patients. Effectively controlling and improving pruritus symptoms, reducing its frequency, or even achieving a complete cure has been a constant pursuit for physicians throughout history. Traditional Chinese medicine (TCM) has a long history of treating itchy skin conditions, with diverse methods. External treatments, in particular, are simple to administer, offer significant results, and minimize side effects. These methods have gradually emerged as superior and increasingly prominent in the treatment of pruritic skin conditions. Currently, TCM medicated bath therapy is a scientific and effective treatment for itchy skin conditions. This involves bathing the entire body or a part of the body with a medicinal solution or water containing a medicinal solution. Depending on the body part targeted, these treatments can be categorized as "whole-body baths" or "localized baths." These treatments are suitable for pruritic skin conditions such as eczema, urticaria, psoriasis, atopic dermatitis, and prurigo nodularis. TCM medicated bath therapy achieves its therapeutic effects through the warming effect of the bath solution, combined with syndrome differentiation and prescription medication. The medicinal solution acts directly on the affected area and is absorbed through the skin's pores and acupoints, distributing itself throughout the body from the exterior to the interior. Its warmth promotes the circulation of qi and blood, harmonizes internal organs, dredges the meridians, regulates qi and blood, and improves immune function. Bath therapy has the advantages of rapid action, safety in use, and ease of operation. It is particularly advantageous for those who are unwilling to take medicine or who cannot take medicine, and has the same effect as oral administration. Through the clinical practice of doctors in various disciplines and diseases such as internal medicine, surgery, gynecology, and pediatrics, a complete treatment system has been gradually formed. Although traditional Chinese medicine liquid therapy has been used earlier in treating the symptoms of itchy skin, a small number of independently operated traditional Chinese medicine hospitals, in order to seek huge profits, also add ingredients containing hormones to the liquid when bathing patients with skin diseases. After bathing, patients feel that the effect is good, but after a period of time, the recurrence rate of skin diseases is very high, which cannot completely solve the patient's pain. At the same time, after the hormone ingredients are added, the hormone ingredients may still induce adverse reactions such as skin damage atrophy, hormone-dependent dermatitis, and infection, resulting in the appearance of side effects after use. Therefore, it is objectively necessary to develop a topical preparation with a scientific and reasonable formula, economical and effective, good therapeutic effect, and no toxic and side effects that has a lung-clearing, moisturizing, and antipruritic effect. Summary of the Invention

[0003] In order to solve the problems existing in the background technology, the purpose of the present invention is to provide an external preparation with the effects of clearing the lungs, moisturizing the skin and relieving itching, which has a scientific and reasonable formula, is economical and affordable, has good therapeutic effects, and has no toxic side effects.

[0004] The present invention discloses an external preparation with lung-clearing, skin-moistening and itching-relieving effects. The external preparation is prepared from the following Chinese herbal medicines in the following weight ratios: 4-20 parts of Artemisia capillaris, 2-10 parts of cicada slough, 2-10 parts of Phellodendron amurense, 4-20 parts of Lithospermum officinale, 2-10 parts of Sophora flavescens, 4-20 parts of Agrimoniae herb, 4-20 parts of Xanthium sibiricum fruit, 4-20 parts of Tribulus terrestris, 4-20 parts of Paeonia suffruticosa, 2-10 parts of Rehmannia root, 4-20 parts of Clematidis, 4-20 parts of Dioscorea opposita, 4-20 parts of Gleditsia sinensis thorn, 4-20 parts of Herba Lycopodii, and 4-20 parts of Saposhnikovia divaricata. The preparation method of the external preparation is as follows: weigh each raw material according to the above-mentioned ratio, wrap each weighed raw material with gauze, soak it in 60-70L of cold water for 2-5 hours, boil it over high heat, then simmer it over low heat, simmer it over low heat for 4-5 hours, turn off the low heat and take out the soup to prepare the external preparation. The external preparation is applied externally by fumigation. When fumigating the external preparation, 5L of soup needs to be mixed with 35-45L of hot water for medicinal bath fumigation. When performing medicinal bath fumigation, the temperature of the soup and hot water after mixing is controlled at 35-45°C, and the medicinal bath fumigation time is 20-30 minutes.

[0005] The pharmacology and efficacy of various Chinese medicinal materials in the external preparations prepared by this invention are as follows: Huang Bai: clears away heat and dampness, and has the effects of purging fire and detoxifying. It is used for damp-heat diarrhea, painful stranguria caused by heat, dysentery caused by damp-heat, beriberi caused by damp-heat, sores, swelling and toxins, and eczema and itching.

[0006] Sophora flavescens: clears away heat and dampness, kills parasites, and has diuretic effects. It is used to treat heat dysentery, blood in stool, jaundice, urinary retention, vaginal discharge, vaginal swelling and itching, eczema, wet sores, itchy skin, scabies and leprosy.

[0007] Sophora flavescens: Reduces swelling, expels toxins, drains pus, and kills parasites. Used for carbuncle in its early stages or when pus has formed but not broken; also used externally for scabies, leprosy, and eczema.

[0008] Lithospermum officinale: Cools blood, activates blood circulation, detoxifies and clears rashes. Used for excessive blood heat and toxins, purple-black macules, measles that do not clear up, sores, eczema, and burns caused by water or fire.

[0009] Moutan Bark: Clears heat, cools blood, and promotes blood circulation and removes blood stasis. It is used for fever caused by febrile toxins, vomiting and bleeding due to blood heat, Yin damage caused by febrile diseases, fever caused by Yin deficiency, fever caused by night heat and morning coolness, dryness caused by bone steaming, blood stasis, amenorrhea and dysmenorrhea, traumatic injuries, carbuncles, sores and ulcers.

[0010] Rehmannia root: clears heat, cools blood, nourishes yin and produces body fluid. Heat entering the blood, causing feverish toxicity, rash, hematemesis, epistaxis, damage to yin due to febrile disease, thirst, constipation due to damage to body fluid, and sore throat.

[0011] Artemisia capillaris: It has the effects of clearing away dampness and heat, promoting bile secretion and relieving jaundice. It is used for damp-heat, summer-heat, dampness, and itching caused by damp sores.

[0012] Creeping pot grass: It has the effects of removing dampness and jaundice, clearing away heat and detoxifying. It is often used for damp-heat jaundice, dysuria, carbuncle and ulcer. Cicada slough: It has the effects of dispersing wind-heat, clearing rashes and relieving sore throats, and dispelling wind and stopping spasms. It is used for measles that does not break out, pruritus caused by rubella, and red eyes and cataracts.

[0013] Xanthium sibiricum: It has the effects of dispersing wind and cold, opening the orifices, removing dampness and relieving pain. It is used for colds, sinusitis, rheumatic pain, urticaria and itching.

[0014] Clematis root: dispels rheumatism and dredges the meridians. Used for rheumatic pain, numbness of limbs, muscle spasms, and difficulty in flexion and extension.

[0015] Fangfeng: dispels wind and relieves exterior symptoms, eliminates dampness and relieves pain, relieves spasms and relieves itching.

[0016] Tribulus terrestris: It has the effects of calming the liver and relieving depression, promoting blood circulation and dispelling wind, improving eyesight and relieving itching. It is used for headaches and dizziness, chest and flank pain, breast closure and abscesses, red eyes and cataracts, urticaria and itching. Agrimony: Astringent, hemostatic, tonifying, antidysentery, and detoxifying. Used for hemoptysis, hematemesis, hematochezia, metrorrhagia, malaria, bloody dysentery, carbuncle, fatigue, injuries from overwork, and traumatic bleeding.

[0017] Chinese Yam: It replenishes Qi and Yin, tonifies the spleen, lungs, and kidneys, and strengthens the essence and stops leukorrhea. It is used for spleen deficiency, poor appetite, chronic diarrhea, asthma and cough due to lung deficiency, spermatorrhea due to kidney deficiency, leukorrhea, frequent urination, and thirst due to deficiency heat.

[0018] Traditional Chinese medicine believes that the occurrence of pruritus is related to the infiltration of wind, dampness and heat. Dampness is one of the six evils and the source of all diseases. It often colludes with wind to become rheumatism, colludes with cold to become cold and dampness, and clungs together with heat to become damp-heat. Dampness can be seen on the surface as itchy skin, erythema, blisters, etc., and in the muscles and bones as soreness, drowsiness, and weakness... A thousand colds are easy to get rid of, but dampness is difficult to get rid of. If dampness, heat, and fire poison invade the skin, qi and blood stagnate, and the blood vessels become disharmony, then sores, boils, and carbuncles will occur. It is advisable to clear away heat and dampness, promote blood circulation, detoxify, and treat sores.

[0019] In view of the above-mentioned etiology, the external preparation prepared by the present invention uses Lithospermum erythrorhizon and Paeonia lactiflora to clear away heat, cool blood, promote blood circulation and remove blood stasis, add Herba Agrimoniae which is astringent and hemostatic, and Radix Rehmanniae which is heat-clearing and fluid-invigorating, yin-nourishing and blood-cooling, clears heat without damaging body fluids, promotes blood circulation without disturbing blood or causing bleeding, and can also calm the blood that is flowing recklessly; Sophora flavescens and Phellodendron chinense clear away heat and dampness, and are combined with Artemisia capillaris and Herba Creepingae to strengthen the effect of clearing heat and removing dampness. In addition, Sophora flavescens is bitter and cold, dries dampness and dispels wind, and "Shennong's Herbal Classic" says: "It removes carbuncles and swellings"; Gleditsia chinensis is pungent and dispels wind toxins, and "Yaojian" says: "It can lead all the ingredients to the ulcer, and is a holy medicine for surgery." The two medicines are combined to dispel dampness and purge fire, treat sores and reduce swelling, as in "Compendium of Materia Medica": Yao Jiyuan said: "It can treat leprosy, leprosy, wind sores, itching and dandruff, and it is more effective when used together with Sophora flavescens. "Dampness is sticky and can easily obstruct the flow of Qi. The Yellow Emperor's Classic of Internal Medicine also has the concept that "wind can overcome dampness". Only when Qi is sufficient and smooth can dampness be better expelled. Therefore, Tribulus terrestris is used to calm the liver, relieve depression and dispel wind; Chinese yam is used to replenish Qi and nourish Yin, and nourish the spleen, liver and kidneys; and the antipyretic herbs Saposhnikovia divaricata, Xanthium sibiricum, and Clematis chinensis are added to dispel wind, overcome dampness, relieve itching, dredge the meridians and relieve pain, so that dampness can be eliminated from the surface. Dampness is a Yin evil that can only be transformed by Yang.

[0020] Compared with the existing technology, the present invention has the following advantages: First, the external preparation prepared by the present invention is prepared with more than ten kinds of precious Chinese medicines, and the medicines are synergistically formulated to achieve the effects of clearing away heat and dampness, dispelling wind and relieving itching, promoting blood circulation and detoxifying to treat sores, and is suitable for treating skin itching, rashes, furuncles, swellings and bleeding caused mainly by dampness and heat; Secondly, the external preparation developed is administered through medicated bath fumigation. After the medicated bath, it can moisturize, unclog qi and blood, warm the meridians, moisturize the skin, and dispel wind, thereby improving the physiological functions of the lungs and various organs, so as to enhance the body's repair and disease resistance, and finally achieve the purpose of curing the disease. At the same time, the medicated bath fumigation is administered through the skin, which can not only avoid the irritation to the gastrointestinal tract caused by oral administration, reduce the blood drug concentration of the whole body, and increase the drug concentration in the local affected area, but also has the advantages of reducing the number of administrations, reducing toxic side effects, and being easy to use. It can greatly improve the patient's compliance and will not cause dependence on it.

[0021] Third, the various Chinese medicinal materials used in the present invention are all Chinese medicinal ingredients, without any added chemical ingredients, hormones, no irritation, no toxic side effects after long-term use, and are relatively simple to prepare and use. Patients will not develop drug resistance and dependence after use, the therapeutic effect is relatively stable, and can completely inhibit the development of skin diseases such as urticaria, eczema, psoriasis, reduce the frequency of recurrence, and improve the psychological or social quality of life of patients, and have good promotion and utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific implementation or the description of the prior art.

[0023] Figure 1 This is a comparison chart of eczema cases before and after treatment of the present invention; Figure 2 This is a comparison chart of a psoriasis case before and after treatment of the present invention; Figure 3 This is a comparison diagram of a case of urticaria before and after treatment of the present invention; DETAILED DESCRIPTION

[0024] The present invention is further described below with reference to the embodiments, but the present invention is not limited in any way. Any changes or substitutions made based on the teachings of the present invention fall within the scope of protection of the present invention. Example

[0025] The external preparation with the effects of clearing the lungs, moistening the skin and relieving itching described in Example 1 is characterized in that: the external preparation is prepared from the following Chinese herbal medicines in the following weight ratio: 4 parts of Artemisia capillaris, 2 parts of cicada slough, 2 parts of Phellodendron amurense, 4 parts of Lithospermum officinale, 2 parts of Sophora flavescens, 4 parts of Agrimoniae, 4 parts of Xanthium sibiricum, 4 parts of Tribulus terrestris, 4 parts of Paeonia suffruticosa, 10 parts of Rehmannia glutinosa, 20 parts of Clematidis, 20 parts of Dioscorea opposita, 20 parts of Gleditsia sinensis, 20 parts of Herba Lycopodii, and 20 parts of Saposhnikovia divaricata.

[0026] The preparation method of the above-mentioned external preparation is: weigh each raw material according to the above-mentioned ratio, wrap the weighed raw materials with gauze, soak them in 60-70L of cold water for 2-5 hours, then boil them over high heat and then simmer over low heat, simmer over low heat for 4-5 hours, turn off the low heat and take out the soup to prepare the external preparation. The external preparation is used externally by fumigation. When the external preparation is fumigated, 5L of soup is needed to be mixed with 35-45L of hot water for medicinal bath fumigation. When the patient is undergoing medicinal bath fumigation, the temperature of the soup and hot water after mixing is controlled at 35-45°C, and the medicinal bath fumigation time is 20-30 minutes. Example

[0027] The external preparation described in Example 2 has the effects of clearing the lungs, moistening the skin and relieving itching. The external preparation is prepared from the following Chinese herbal medicines in the following weight ratio: 12 parts of Artemisia capillaris, 8 parts of cicada shells, 6 parts of Phellodendron amurense, 15 parts of Lithospermum officinale, 5 parts of Sophora flavescens, 14 parts of Agrimoniae, 10 parts of Xanthium sibiricum, 13 parts of Tribulus terrestris, 15 parts of Paeonia suffruticosa, 5 parts of Rehmannia glutinosa, 18 parts of Clematidis, 14 parts of Dioscorea opposita, 17 parts of Gleditsia chinensis, 12 parts of Herba Creepingii, and 18 parts of Saposhnikovia divaricata.

[0028] The preparation method of the above-mentioned external preparation is: weigh each raw material according to the above-mentioned ratio, wrap the weighed raw materials with gauze, soak them in 60-70L of cold water for 2-5 hours, then boil them over high heat and then simmer over low heat, simmer over low heat for 4-5 hours, turn off the low heat and take out the soup to prepare the external preparation. The external preparation is used externally by fumigation. When the external preparation is fumigated, 5L of soup is needed to be mixed with 35-45L of hot water for medicinal bath fumigation. When the patient is undergoing medicinal bath fumigation, the temperature of the soup and hot water after mixing is controlled at 35-45°C, and the medicinal bath fumigation time is 20-30 minutes. Example

[0029] The external preparation with the effects of clearing the lungs, moistening the skin and relieving itching described in Example 1 is characterized in that the external preparation is prepared from the following Chinese herbal medicines in the following weight ratios: 20 parts of Artemisia capillaris, 10 parts of cicada slough, 10 parts of Phellodendron amurense, 20 parts of Lithospermum officinale, 10 parts of Sophora flavescens, 20 parts of Agrimoniae, 20 parts of Xanthium sibiricum, 20 parts of Tribulus terrestris, 20 parts of Paeonia suffruticosa, 2 parts of Rehmannia root, 4 parts of Clematidis, 4 parts of Dioscorea opposita, 4 parts of Gleditsia sinensis thorns, 4 parts of Herba Creepingii, and 4 parts of Saposhnikovia divaricata.

[0030] The preparation method of the above-mentioned external preparation is: weigh each raw material according to the above-mentioned ratio, wrap the weighed raw materials with gauze, soak them in 60-70L of cold water for 2-5 hours, then boil them over high heat and then simmer over low heat, simmer over low heat for 4-5 hours, turn off the low heat and take out the soup to prepare the external preparation. The external preparation is used externally by fumigation. When the external preparation is fumigated, 5L of soup is needed to be mixed with 35-45L of hot water for medicinal bath fumigation. When the patient is undergoing medicinal bath fumigation, the temperature of the soup and hot water after mixing is controlled at 35-45°C, and the medicinal bath fumigation time is 20-30 minutes.

[0031] Traditional Chinese medicine research has found that medicinal bath therapy is based on the theoretical foundation of traditional Chinese medicine, starting from a holistic concept and following the principle of syndrome differentiation and treatment in traditional Chinese medicine. "Although the treatment is external, it is no different from the treatment of the internal." The effect of medicinal bath therapy can be achieved through the warming effect of the bath liquid, syndrome differentiation and treatment, and prescription and medication. Hot water baths have the effect of opening the pores and inducing sweating. Through the power of warmth, they warm the yang and transform qi, warm the meridians and dredge the blood vessels, so that qi and blood circulate and the organs are harmonized. When the medicinal liquid infiltrates the body surface, the medicine directly acts on the skin and is directly absorbed through the skin pores and acupoints, entering the meridians and blood vessels, reaching the internal organs, and being distributed throughout the body from the outside to the inside. It can dredge the meridians, harmonize the internal organs, promote the smooth flow of qi and blood, and balance yin and yang, thereby preventing and treating diseases. There is a theory in Lihua Pianwen: "Treat the disease by treating the disease, the skin is separated but the pores are open, and the internal organs are directly reached." Some scholars have explored and analyzed the mechanism of action of medicinal bath therapy, and believe that medicinal bath has the effects of harmonizing qi and blood, dredging meridians, clearing away heat and detoxifying, dispelling wind and relieving itching, nourishing blood and moisturizing the skin.

[0032] Modern medicine considers the skin to be the largest organ in the human body, performing crucial physiological functions such as barrier function, absorption, temperature regulation, secretion and excretion, sensation, immunity, respiration, and endocrine function. It maintains its own dynamic microenvironment while participating in the functional activities of various organs throughout the body, maintaining a stable internal environment. Traditional Chinese medicine baths utilize a flexible method to ensure that the drug comes into full contact with the affected area. Immersing the affected area in the medicinal solution removes exudate, scabs, and scales. The bath dilates capillaries, improves local microcirculation, accelerates tissue repair, and promotes the resolution of lesions. Furthermore, the bath opens the pores, facilitating drug absorption. The drug stimulates the numerous nerve endings and specialized receptors distributed throughout the skin, allowing it to exert its desired effect—a hydration-warming effect. This hydration-warming effect also causes vasodilation, accelerating blood and lymphatic circulation, improving hypoxia in the affected area, local tissue nutrition, and overall function. The accelerated circulation and metabolism, along with increased sweat production, enhance the excretion of harmful substances, providing a pathway for pathogens to escape and promoting better immune function. Medicinal baths can calm itching and improve patients' sleep quality by improving cellular immune status.

[0033] The external preparations prepared by the above-mentioned Examples 1 to 3 are derived from the clinical experience of the Traditional Chinese Medicine Hospital of Qujing City, Yunnan Province. This formula has a large amount of practical experience in clinical application in dermatology. It is mainly used to treat neurodermatitis, atopic dermatitis, tinea corporis, eczema, urticaria, psoriasis, etc., and has achieved good therapeutic effects. Its efficacy has also been affirmed by patients. The external preparation has the effects of clearing away heat and dampness, promoting lung function and relieving itching. It has small toxic and side effects, high safety, low price and distinctive features in the treatment of itchy skin diseases. At the same time, a bath is used to treat the fumigation patient. Chinese medicine bathing is a commonly used method for traditional Chinese medicine to treat skin diseases. It has good efficacy and is not easy to cause adverse reactions. It has high safety. Chinese medicine bathing has the effects of clearing away heat and toxic substances, dispersing wind and relieving itching, promoting blood circulation and activating collaterals, and can inhibit bacterial reproduction, improve vascular permeability, promote blood circulation, accelerate metabolism and the like, so as to achieve the purpose of treating skin itching, and can reduce the occurrence of adverse reactions such as recurrence and redness, local skin atrophy, etc.

[0034] Obtain the external preparation prepared in Example 1; 25 patients suffering from dermatitis, tinea corporis, eczema, urticaria, psoriasis and other diseases were treated. The treatment method was to use medicated bath fumigation to soak the whole body once a day, and 5 days was a course of treatment. After 3 courses of treatment, the skin itching symptoms disappeared and the skin color was significantly improved. The efficiency can reach 95%.

[0035] Typical cases are as follows: On March 26, 2022, a 47-year-old female patient, Zhu, presented with erythema, papules, and itching on her trunk and extremities for over five months. Five months prior, without apparent cause, she developed widespread, bright red erythema and papules on her trunk and extremities. Some of the lesions were confluent and symmetrically distributed. Localized lesions were infiltrated and thickened, particularly on the lower extremities. The lesions were dry and scaly, with severe itching, aggravated by heat and at night. Scattered scratches and scabs were visible. She self-treated with oral anti-allergic medications and topical medications (specifics unknown) for itching, which slightly alleviated her symptoms, but the condition persisted. She presented to our hospital for further treatment. At presentation, she developed widespread, bright red erythema and papules on her trunk and extremities. Some of the lesions were confluent and symmetrically distributed. Localized lesions were infiltrated and thickened, particularly on the lower extremities. The lesions were dry and scaly, with severe itching aggravated by heat and at night. Scattered scratches and scabs were visible. Tongue: Red, with a greasy, yellowish coating. Pulse: Stringy and slippery. Traditional Chinese Medicine diagnosis: Eczema (syndrome of damp-heat accumulation). This topical preparation was administered daily for a five-day course of treatment. Each time, 5 liters of the traditional Chinese medicine preparation was mixed with 35-45 liters of hot water for a medicinal bath. During the bath, the temperature of the mixture was maintained at 35-45°C, and the bath lasted 20-30 minutes. Upon follow-up five days later, the lesions had subsided by 30%, and the itching had significantly eased. Upon follow-up ten days later, the lesions had subsided by 60%, with no new lesions and almost no itching. Follow-up one month later showed that the patient's lesions had essentially resolved.

[0036] Obtain the external preparation prepared in Example 2; 25 patients suffering from dermatitis, tinea corporis, eczema, urticaria, psoriasis and other diseases were treated. The treatment method was to use medicated bath fumigation to soak the whole body once a day, and 5 days was a course of treatment. After 3 courses of treatment, the skin itching symptoms disappeared, the skin color was significantly improved, and the efficiency could reach 100%.

[0037] Typical cases are as follows: On September 6, 2021, a 39-year-old male patient, Mr. Wu, presented with 3 days of generalized erythema and wheals with itching. The rash and wheals were scattered throughout the body, bright red in color, partially confluent with well-defined borders. The wheals appeared and disappeared suddenly, and the itching was intense, aggravated by heat. He occasionally experienced palpitations and chest tightness, but no fever, cough, or expectoration, sore throat, itchy throat, headache, or dizziness. He also experienced no nausea, vomiting, abdominal pain, diarrhea, or joint pain. His appetite and sleep were poor, but his bowel movements were normal. His tongue was red with a thin coating, and his pulse was rapid and floating. The Traditional Chinese Medicine diagnosis was eczema (wind-heat attacking the exterior). For external washing, 5L of the Chinese medicine preparation needs to be mixed with 35-45L of hot water for medicinal bath fumigation. When the patient is undergoing medicinal bath fumigation, the temperature of the Chinese medicine preparation and hot water is controlled at 35-45°C, and the medicinal bath fumigation time is 20-30 minutes. After a follow-up visit 3 days later, most of the skin lesions have subsided, no new skin lesions have occurred, there is no itching, and the skin is smooth. After a follow-up visit one month later, the patient's symptoms have disappeared and there has been no recurrence.

[0038] On January 13, 2021, a 40-year-old male patient, Mr. Li, presented with scattered bright red rash and wheals all over his body, which were partially fused into patches with clear borders. The wheals appeared and disappeared suddenly, and he experienced severe itching, which was aggravated by heat. His left ankle was red and swollen, with a dark red tinge. There was mild pitting edema on the left dorsum of the foot and ankle, with desquamation. He had no fever, palpitations, chest tightness, dyspnea, cough, sputum, headache, or dizziness. He also had no nausea, vomiting, abdominal pain, diarrhea, or joint pain. His appetite and sleep were poor, but his bowel movements were normal. His tongue was red, with a thin coating, and his pulse was rapid and floating. The Traditional Chinese Medicine diagnosis was eczema (wind-heat attacking the exterior). The topical preparation was given for external washing. 5L of the topical preparation was mixed with 35-45L of hot water for medicated bath fumigation. When the patient was taking the medicated bath fumigation, the temperature of the topical preparation and hot water was controlled at 35-45°C. The medicated bath fumigation time was 20-30 minutes. After a follow-up visit 3 days later, most of the skin lesions disappeared, no new lesions appeared, no itching occurred, and the skin was smooth. After a follow-up visit 3 weeks later, the patient was cured and there was no recurrence.

[0039] Obtain the external preparation prepared in Example 3; 25 patients suffering from dermatitis, tinea corporis, eczema, urticaria, psoriasis and other diseases were treated. The treatment method was to use medicated bath fumigation to soak the whole body once a day, and 5 days was a course of treatment. After 3 courses of treatment, the skin itching symptoms disappeared, the skin color was significantly improved, and the efficiency could reach 94%.

[0040] Typical cases are as follows: On August 18, 2023, a 19-year-old male patient, surnamed Huang, presented with a history of erythema, plaques, scaling, and itching all over his body for over nine years. Nine years prior, he reported that scattered erythema and papules covered with silvery-white scaling appeared on his upper extremities without apparent cause. He had previously visited the dermatology clinic at our hospital's Transportation Branch and received topical medications and oral Chinese medicine (specifics unknown), which improved his condition. Subsequently, he continued to experience recurrent new rashes, papules, and plaques, particularly after a cold, which increased significantly and gradually extended to his scalp, trunk, and extremities. He subsequently sought treatment at various locations, including the township health center, the county people's hospital, and private clinics. He was given oral Chinese medicine and topical medications, including Baidu Cream and calcipotriol (specifics unknown), with occasional relief but no resolution. Over the past two months, these symptoms have recurred and gradually worsened, with widespread erythema, plaques, scaling, and itching all over his body, which worsened in the heat and at night. For further systematic diagnosis and treatment, the patient presented to our outpatient clinic today. Symptoms: Generalized bright red, well-defined erythema and plaques are seen all over the body, covered with abundant silvery-white scales. Some lesions have coalesced into patches and become hypertrophic, particularly on the abdomen and extremities. Pruritus is associated with itching, which worsens in heat and at night. Scattered scratches and scabs are visible, and nails have a thimble-like pattern, with no obvious hair fasciculations. Joints are normal, with no deformity or tenderness, and no pustules, erosions, ulcers, or exudates. The patient experiences dry throat and mouth, but no fever, sore throat, or cough. He experiences no palpitations, chest tightness, pain, or shortness of breath, and no headaches, abdominal pain, or other discomfort. Since the onset of his illness, his weight has remained stable, his spirits are good, his diet is adequate, his sleep is poor, and his bowel movements are normal. Tongue: Red with a yellow coating. Pulse: Rapid. Traditional Chinese Medicine diagnosis: Pulmonary ulcer (blood-heat syndrome). The topical preparation was administered as a fumigation bath. 5L of the preparation was mixed with 35-45L of hot water. The temperature of the mixture was maintained at 35-45°C for 20-30 minutes. Upon follow-up 5 days later, the itching was significantly relieved, no new lesions developed, and the lesions were significantly thinner. Upon follow-up 10 days later, all lesions had resolved, with almost no itching. A one-month follow-up revealed a 60% reduction in lesions, leaving only erythema and a small amount of pigmentation.

[0041] Summary of therapeutic effect: After treating and following up the patients in the above experimental examples, it was found that the external preparation developed by the present invention has the effects of clearing away heat, detoxifying, promoting dampness removal, dispelling wind and relieving itching. Especially after being supplemented with a medicated bath, it can clear away dryness, unclog qi and blood, warm the meridians, moisturize the skin, dispel wind, etc., thereby improving the physiological functions of the lungs and various organs to enhance the body's repair and disease resistance, and finally achieve the purpose of curing the disease. The entire treatment process is painless and has no side effects. After 3 courses of treatment, the therapeutic effect is more obvious, and the recurrence rate after cure is also relatively low. It can be promoted for use in clinical practice.

Claims

1. An external preparation having the effects of clearing the lungs, moistening the skin and relieving itching, characterized in that: The external preparation is prepared from the following Chinese herbal medicines in the following weight proportions: 4-20 parts of Artemisia capillaris, 2-10 parts of cicada slough, 2-10 parts of Phellodendron amurense, 4-20 parts of Lithospermum officinale, 2-10 parts of Sophora flavescens, 4-20 parts of Agrimoniae herb, 4-20 parts of Xanthium sibiricum fruit, 4-20 parts of Tribulus terrestris, 4-20 parts of Paeonia suffruticosa, 2-10 parts of Rehmannia root, 4-20 parts of Clematidis, 4-20 parts of Dioscorea opposita, 4-20 parts of Gleditsia sinensis thorn, 4-20 parts of Herba Lycopodii, and 4-20 parts of Saposhnikovia divaricata.

2. The external-use preparation having the effects of clearing the lungs, moistening the skin and relieving itching according to claim 1, characterized in that: The external preparation is prepared from the following Chinese herbal medicines in the following weight proportions: 12 parts of Artemisia capillaris, 8 parts of cicada slough, 6 parts of Phellodendron amurense, 15 parts of Lithospermum officinale, 5 parts of Sophora flavescens, 14 parts of Agrimoniae herb, 10 parts of Xanthium sibiricum fruit, 13 parts of Tribulus terrestris, 15 parts of Paeonia suffruticosa, 5 parts of Rehmannia root, 18 parts of Clematidis, 14 parts of Dioscorea opposita, 17 parts of Gleditsia chinensis, 12 parts of Herba Creepingii, and 18 parts of Saposhnikovia divaricata.

3. The method for preparing the external preparation having the effects of clearing the lungs, moistening the skin and relieving itching according to claim 1, wherein: Weigh each raw material according to the above ratio, wrap the weighed raw materials with gauze, soak them in 60-70L of cold water for 2-5 hours, then boil them over high heat and then simmer over low heat, simmer over low heat for 4-5 hours, turn off the low heat and take out the soup.

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