Skin diseases similar to urticaria include papular urticaria and urticarial vasculitis. 1. Papular urticaria: It is a localized skin allergic and inflammatory reaction that occurs after the bite of arthropods and belongs to insect bite dermatitis. Its manifestations are edematous rubella-like papules, papules, windsocks, etc., similar to urticaria. Often accompanied by varying degrees of itching. 2. Urticarial vasculitis: also known as “giant urticaria”, is a kind of occurrence in the subcutaneous loose tissue or mucous membrane limited edema. Its manifestation is a bright surface of the border is not clear confined swelling. It is often complicated by urticaria. At the same time, accompanied by abdominal pain and diarrhea, may also should be identified with gastroenteritis and other acute abdominal diseases. If there is any discomfort, it is recommended to seek prompt medical attention.