How to manage drug-induced allergic urticaria?

Drug-induced allergic urticaria is an allergic reaction caused by medications, typically presenting symptoms such as skin erythema, edema, and pruritus. The pathogenesis is complex and may be related to the chemical composition of the drug, abnormal immune responses, and individual genetic factors. Treatment of drug-induced allergic urticaria mainly includes the following aspects: 1. Avoidance of allergens: Once an allergy to a certain drug is identified, administration of the drug should be immediately discontinued, and further exposure should be avoided. 2. Pharmacotherapy: Depending on the severity of symptoms, topical agents (such as calamine lotion, dexamethasone ointment), oral medications (e.g., cetirizine, loratadine), or injectable drugs (such as calcium gluconate injection, vitamin C injection) may be selected for treatment. 3. Lifestyle adjustments: Attention should be paid to daily habits, including avoiding scratching the affected areas, prolonged exposure to sunlight, and consumption of foods that may exacerbate the allergic reaction. The management of drug-induced allergic urticaria requires a comprehensive approach involving allergen avoidance, pharmacotherapy, lifestyle modifications, and guidance from a physician.