Allergic dermatitis usually returns to normal in 1~2 weeks, but that time is not absolute. Allergic dermatitis is a common skin disease, it is mainly caused by contact or inhalation of allergens. After the occurrence of atopic dermatitis, such as timely find allergens and away from, oral loratadine and other antihistamines, adhere to the standardized treatment program, with the daily light, nutritious diet, avoid high-protein, spicy stimulating food, most can be in 1 ~ 2 weeks to return to normal. However, the recovery time for atopic dermatitis patients is determined by a number of factors such as their condition, whether they are actively treated, and their sensitivity to medications. If the condition of atopic dermatitis is more serious, and the patient does not cooperate with the treatment and good daily care, coupled with the blind use of drugs at the beginning of the delay in the treatment time, then the recovery time will also be prolonged. It is recommended to go to a regular hospital in time if you find yourself with symptoms of atopic dermatitis.