Urticaria, if the symptoms are mild, some of them may heal on their own after removing the triggers, but most patients usually do not recover on their own, and severe cases may cause symptoms such as anaphylactic shock, which requires active treatment. 1. Urticaria is a skin disease that may be caused by a variety of factors such as genetics, allergies, mental factors, immune disorders, drug reactions and so on. Hives caused by allergy, if the symptoms are mild, only mild redness, itching, find the allergens, avoid re-exposure after a part of the patients may slowly self-healing. 2. However, in most cases, urticaria cannot be cured by itself, and the skin will have patches of wind, angioedema, accompanied by itching, and in severe cases, there will be respiratory edema, which will cause asphyxiation or anaphylactic shock and other symptoms, which may be life-threatening and require active treatment. When urticaria occurs, it is recommended to go to a regular hospital in time, and follow the doctor’s instructions to avoid delaying the condition.