I. Urticaria 1. Acute urticaria manifested purely by wind clumps can be controlled quickly by applying first and second generation antihistamines as appropriate. 2.Chronic urticaria or acute urticaria with breath-holding, gastrointestinal discomfort, double lid edema, and lip edema should be taken seriously because it can easily cause anaphylaxis and asthma. 3.Allergen examination should be conducted to find the corresponding allergic substance, and if it is positive, depending on the degree, corresponding avoidance should be carried out in the future. 4.For patients with unknown etiology, dietary diary is encouraged to find the cause. 5, the acute period should not be spicy food, it is appropriate to light diet. Second, eczema 1, acute eczema often has a clear cause, improve quickly. 2, chronic eczema should find the cause as far as possible, the patient’s work environment, habits, diet, hobbies and thoughts and emotions to do an in-depth understanding of the exclusion of visceral diseases. 3, puncture test and food intolerance can be for us to find allergic substances, to eat things to avoid, the time to avoid the mouth according to the degree of allergy. Blind avoidance is not encouraged. 4. House dust mite allergy should be cleaned well, bedding and clothes should be washed in the sun. 5, the acute period should not spicy food, should be light diet. Third, psoriasis is clinically divided into four types, in addition to the common type, the occurrence of the other three types can be caused by drug abuse, so for patients with psoriasis in some cases “rather not to treat, should not be treated”, taking those very toxic drugs, but will be counterproductive, the loss is not worth the gain. Encourage to go to a regular hospital for medical treatment, do not believe in wild advertisements and biased prescriptions. As the weather becomes cooler, colds are likely to cause recurrence and aggravation of the disease, so patients are advised to pay attention to weather changes, add clothes and keep warm to prevent colds, throat inflammation and other inflammatory diseases. Because cold and flu are the two biggest triggering factors for psoriasis. For drugs that should not be used, see “Which drugs should not be used by psoriasis patients?”. . Acne has four clinical rules that should be kept in mind: Do not squeeze to prevent infection and scarring. Eat less spicy and irritating things. Keep your bowels open, once a day. Do not stay up late and keep a regular schedule. The treatment of acne with retinoic acid should be noted that it should not be used for women of childbearing age. If it is to be used, the side effects of the drug should be explained to the patient, and the patient should be informed that she can only have children two years after stopping the drug. Allergic purpura occurs mostly in children and can be caused by allergies and infections. If the patient has chronic disease, he should be examined for allergens, find the cause of the disease, anti-infection treatment, and eliminate the inflammatory foci. The patient is also instructed to take rest, not to do strenuous exercise, pay attention not to catch cold.