The blood marks on the skin when pressed may be related to artificial urticaria, thrombocytopenic purpura and other diseases, a clear diagnosis can be taken after the general treatment, medication and other ways to improve. 1. Artificial urticaria: the skin on the body once the pressure of blood marks may be artificial urticaria caused by the patient should avoid the skin by friction, scratching and other mechanical stimuli, but also comply with the doctor’s instructions oral H1 antihistamines, such as loratadine, cetirizine, etc., to help anti-inflammatory, anti-allergic. 2. Thrombocytopenic purpura: the skin on the body of a pressure on the blood marks may also be thrombocytopenic purpura caused by the patient should avoid skin pressure, you can follow the doctor’s instructions for the injection of immunoglobulin, rituximab and other drugs, can improve the skin symptoms. The cause of the skin on the body when the pressure of the blood marks more reasons, suggest that the patient to medical examination, clear cause, with the doctor for standardized treatment.