To help adult urticaria subside quickly, antihistamines can be used under the guidance of a doctor, while also avoiding triggering factors. The following are common treatment methods:

1. Oral antihistamines: such as loratadine and cetirizine, can help relieve itching and wheals. It is recommended to choose the appropriate type as prescribed by your doctor. Some medications may cause drowsiness, so pay attention to the duration of use.

2. Topical relief medications: Topical preparations such as calamine lotion can temporarily relieve itching, but their effectiveness is limited for severe symptoms and they are usually used as an adjunct.
3. Avoid triggering factors: Record and avoid foods, medications or environmental stimuli that may cause allergies, such as seafood and pollen, to help reduce the frequency of attacks.
If the rash continues to spread or is accompanied by severe symptoms such as difficulty breathing, please seek medical attention immediately. Keeping the skin clean, wearing loose clothing, and minimizing scratching can help relieve discomfort.