1.Definition Urticaria is a limited edematous reaction due to the dilation and increased permeability of small blood vessels in the skin and mucous membranes. The characteristic clinical manifestation is a wind mass of varying size with itching, which may be accompanied by angioedema. Chronic urticaria is defined as a condition in which there are at least 2 episodes of urticaria per week, lasting for ≥6 weeks.
Chronic urticaria is defined as at least 2 episodes per week, lasting ≥6 weeks. A small number of patients with chronic urticaria can also show intermittent episodes. 2, etiology a, mental factors and endocrine changes, mental tension emotional impulses menstruation menopause pregnancy, etc.. Second, the common causative factors such as fish, shrimp, crab, eggs and milk that contain special proteins. Inhalation of various pollen, dust, etc. Four, bacterial infection viral infection fungal infection and parasitic insect bites such as mites fleas bedbugs, etc. Physical and chemical factors, such as cold, heat, sunlight, friction and pressure and other physical and mechanical stimuli or certain chemical substances into the body and the onset of disease. Genetic factors, such as familial cold urticaria. Internal diseases, lymphoma, cancer, hyperthyroidism, rheumatism and rheumatoid arthritis, SLE, hyperlipidemia, cholecystitis, nephritis, liver disease, diabetes, etc. Many drugs often cause the disease, penicillin dysentery sulfa drugs serum vaccines and other drugs can be caused by metabolic reactions morphine codeine atropine and other drugs can directly cause mast cells to release tissue according to. 3, clinical manifestations and classification urticaria clinical manifestations for the wind mass, its attack form is diverse, mostly accompanied by pruritus, a few patients can be combined with angioedema. According to the onset pattern, combined with clinical manifestations, urticaria can be clinically classified. Different types of urticaria have certain differences in their clinical manifestations. 4.Treatment The first step in treating urticaria is to look for the above-mentioned possible triggering factors, which requires meticulousness, patience, and the ability to recall what you have been exposed to. You can also visit a dermatologist to do tests for inhalant allergens, food allergens, patch tests or food intolerances according to your condition. Once identified, avoid and remove them. Take antihistamines or use other anti-allergy treatments during the rash period. According to Chinese medicine, the occurrence of urticaria is attributed to the lack of congenital endowment and the evil of wind, dampness, heat and toxicity in the skin. The characteristics of “wind” and “itching” are consistent with the clinical manifestations of “wind damage” and “itching”. The clinical manifestations of “dampness and stickiness” and “dampness and swelling” are consistent with the pathological manifestations of dermal edema and the clinical characteristics of oozing and recurrent attacks. Therefore, “wind” and “dampness” are the main pathological factors in the development of the disease.