The redness and bumps on the body when scratched belong to artificial urticaria, which can be treated with medication and physical therapy. Artificial urticaria refers to the phenomenon that after scratching with the hand or a blunt instrument lightly pressed and scratched on the skin, there is a doughy streak of elevation along the line of the scratches. 1. drug therapy: it is recommended that after diagnosis, itching is obvious, antihistamines can be used, such as loratadine, cetirizine, etc.; local symptoms are serious, but also the joint use of topical glucocorticosteroid ointment, such as mometasone furoate, etc.; there are infections, but also the use of antibiotics, such as doxycycline, erythromycin, etc.; antihistamines are ineffective, can be taken orally when hormonal drugs (prednisone), immune suppressant (cyclosporine), and so on. Physiotherapy: Physiotherapy can be used to treat the disease. 2. Physical therapy: general patients simply use the drug treatment effect is not good, but also with ultraviolet light therapy and other physical therapy, to reduce the patient’s symptoms, treatment of disease. It is recommended that patients usually reduce scratching the skin, reduce skin contact with too cold or too hot objects, wear some loose and comfortable clothes, and when using medication, strictly comply with the doctor’s instructions to use medication, not blindly self-medication.