Itchy body with bumps after scratching is considered to be caused by allergy. Clinically, it may be eczema or urticaria, both are allergic diseases, possibly caused by food or inhalation allergies, and are related to the patient’s immune dysfunction and susceptibility to allergies. If you’re looking for an allergy-free solution, you can take oral anti-allergy medication, such as loratadine or cetirizine, and apply topical hormonal creams, such as dextran cream or hydrocortisone butyrate cream. You should pay attention to your diet, don’t eat spicy and stimulating food, don’t eat fish, shrimp and other hair products, and avoid staying up late to avoid factors that cause immune disorders.