A large red very itchy body may be caused by hives, eczema, atopic dermatitis and other diseases.
1. Urticaria: a skin disease caused by food or drug allergies, infections and other factors. The main manifestation is angioedema with itchy bumps on the surface of the skin, and the bumps can be red in color and connected into pieces.
2. Eczema: It is a chronic inflammatory skin disease with obvious itching, which can be related to various factors such as environment, immune function and chronic infection. It can be manifested as patches of red papules, erythema, blisters with itching, and in severe cases, there may be erosion and oozing.
3. Allergic dermatitis: It is a skin disease in which the body has been sensitized by allergens, and contact with the allergens again causes an abnormal immune response. It can appear on the body in patches, accompanied by itching red spots, papules.
If the symptoms worsen or affect normal life, you should go to the hospital in time.