The difference between urticaria and allergies

Allergy is a relatively large range, many diseases can show the performance of skin allergies, such as urticaria, eczema, skin itching, solar dermatitis, drug dermatitis, urticaria belongs to an allergic disease, if the surface of the skin, is the symptom of skin allergy. Urticaria in the skin performance is normal local flaky erythema, which can show the size of soybeans or maculopapules.