###Human: How can I stop getting big rashes every night which disappears in the morning? ###Assistant: Hi. Yes, this is the condition called urticaria. That can be acute or may be chronic. There can be different reasons for urticaria-like infections, drugs or certain things in our foods like additives, etc., that can cause it. Most of the cases are idiopathic that is the reasons are not known. The most important thing in its treatment is to look for trigger factors that are causing it like what type of food do you eat? Certain foods like egg, meat, junk food, etc., can cause it, taking any drugs, etc. Oral antihistamine are the mainstay of treatment and we can increase the dosage of it if not cured. Topical application of steroid with Calamine lotion is done to have symptomatic relief. Urticaria?