Itchy red dots on the body may be caused by eczema, contact dermatitis, drug rash, Malassezia folliculitis and other causes. 1. Eczema: in addition to a variety of factors causing inflammatory skin reactions, may cause symptoms of itchy red spots on the body. 2. Contact dermatitis: skin contact with external sensitizers can cause allergic reactions at the contact site, resulting in itchy red spots on the body, and some may also cause skin erythema, vesicles and other symptoms. 3. Drug rash: the allergic reaction to drugs after using drugs may also cause red spots on the body and itchy phenomenon. 4. Malassezia folliculitis: the premise is that the use of glucocorticoid drugs or broad-spectrum antibiotics will affect the body’s normal skin defenses, resulting in a large number of Malassezia bacteria in the hair follicle reproduction, may also cause red spots on the body is very itchy symptoms. Itchy red spots on the body, there may be other reasons, it is recommended to go to the hospital in time for examination, to clarify the cause of the disease on the doctor’s advice for treatment.