Eczema and urticaria mainly lie in different causes, different symptoms and so on. 1. Different causes: hives may be caused by food, infection and other factors, while eczema is more complex, generally related to a variety of internal and external factors. 2. Symptoms: Hives usually vary in size, and there will be different shapes of red spots or edematous red spots, which will not leave any traces after the rash subsides. Eczema, on the other hand, will appear polymorphic rash, mainly will appear erythema, papular spots, papules, pimples, blisters, vesicles, oozing, scabs and so on. Eczema and urticaria are different diseases, so pay attention to identify, if necessary, can cooperate with the doctor to improve the examination, to determine the disease and then do the treatment, do not blindly use drugs.