Urticaria (hives) should usually be treated by a dermatologist. If the hospital has more specialized departments, you can also choose the allergy or immunology department based on the characteristics of your symptoms. The following are specific instructions:

1. Dermatology is the first choice.

Urticaria, characterized by wheals, redness, swelling, and itching, is a common skin condition. Dermatologists can diagnose it by examining the rash and taking a medical history, and prescribe antihistamines to relieve symptoms.
2. Consider allergy department
If urticaria recurs frequently, or is accompanied by respiratory discomfort or a history of food or drug allergies, it may be related to an allergic constitution. The allergy department specializes in identifying allergens and helping to develop long-term management plans.
3. Referral to the Immunology Department
When urticaria is accompanied by joint pain, fever, or persistent symptoms, it's necessary to rule out immune system problems. In this case, a dermatologist may recommend a referral to an immunology specialist for further examination.
Before your visit, please record the time of rash appearance, triggers, and medications used to help the doctor make a diagnosis. In daily life, avoid scratching your skin, wear loose clothing, and reduce consumption of spicy or irritating foods. If you experience difficulty breathing, swelling of the eyelids or lips, seek immediate emergency care.