Itchy bumps all over the body consider eczema, urticaria, drug rash and other causes, need to be analyzed according to the symptoms. 1. Eczema: Eczema is caused by a variety of internal and external factors of the superficial dermis and epidermal inflammation, in the acute stage of the disease will mainly appear erythema, edema, and the size of the pimples, accompanied by intense itching. 2. Urticaria: If the patient is allergic, allergens enter the body through skin or mucous membrane contact, inhalation, injection and food, which will cause vasodilatation and increased vascular permeability, and the main manifestation is a windy bump accompanied by intense itching. 3. Drug rash: most of the drug rash belongs to the allergic reaction, the ability of drugs to stimulate allergic reaction depends on a variety of factors, and the molecular properties of drugs, metabolism, and individual differences, genetic background and other factors. In addition, the adverse reaction of some drugs and bacterial dysbiosis will also appear drug rash, the main manifestation of the pinpoint to corn size red papules, dense symmetrical distribution, may be distributed throughout the body, mainly in the trunk and other parts of the body. Itchy goose bumps all over the body, it is recommended to go to the hospital for examination, for the cause of the symptomatic treatment.