Blisters are blisters. Allergic dermatitis blisters are not recommended to be poked and prodded to avoid infection, and should be treated as prescribed by a doctor. Allergic dermatitis is an abnormal immune response caused by skin contact with allergens. It manifests itself as a polymorphic rash, such as erythema, papules, blisters, etc., which may be accompanied by tingling, itching, redness and swelling. The blisters that appear are not recommended to be poked by themselves, as they are prone to secondary infection and aggravation of the condition. If the blisters are small, they can usually be absorbed by themselves after medication. If the blisters are large, you can use a sterile syringe to aspirate the fluid inside the blisters, and then use iodophor to sterilize it locally to prevent infection, which needs to be carried out by medical personnel to avoid unauthorized treatment. The appearance of allergic dermatitis blisters, should promptly seek medical attention, under the guidance of the doctor standardized treatment, so as not to aggravate the condition.