Itchy bumps on the body when scratched consider artificial urticaria, contact dermatitis, eczema and so on. The main method is drug treatment, according to the specific disease to choose the appropriate drugs. 1. Artificial urticaria: artificial urticaria is the skin friction, scratching, scratching after the appearance of thread-like elevation, if not particularly serious can disappear on their own, the more serious symptoms can be oral cetirizine, loratadine, pay attention to dryness and ventilation. 2. Contact dermatitis: this is a hypersensitivity reaction after contact with a certain substance, the substance itself is not irritating or toxic, the lesions are extensive and symmetrical. You can take antihistamine drugs, such as ebastine and olopatadine. In addition, it is necessary to clarify the allergens and keep away from allergens. 3. Eczema: the main symptom of eczema is itching, which is related to a variety of factors. In the acute stage, erythema and edema will appear if scratching, mainly applying glucocorticoid drugs, such as mometasone furoate cream, dexamethasone cream, and when the symptoms are more serious, you can take ibrastine and cetirizine orally. Avoid scratching, pay attention to hygiene, prevent infection. Itching all over the body, a scratch on the goosebumps should be timely consultation, for the cause of the symptomatic use of drugs, the above drugs should be used under the guidance of the doctor, can not be used blindly.