Hello, allergic urticaria is caused by allergic dermatitis caused by contact with or ingestion of allergenic foods. It usually resolves on its own in about 3 days.

1. If the itching is not smooth, you can consider using Piyanping. You can buy a pill at a drug store for a few yuan, or buy loratadine antihistamine drugs at the drug store. It is recommended to use the dosage under the guidance of professionals. .

2. If it is simple allergic urticaria without itching and only erythema, you can consider not using medicine. After all, medicine is three-part poison. Treat medication rationally.

I wish you a speedy recovery. I hope you can give me a fair comment or accept the answer after reading it. Thank you.