Frequent bruising on the body signals a problem with the body’s hemostatic function, which may be the following: i. Abnormalities in vascular structure and function, mostly hereditary vasodilatation, such as hereditary hemophilia, immune diseases, such as primary thrombocytopenia. Infection of drugs and disseminated intravascular coagulation can lead to bruising on the body; second, abnormal platelet function, such as hereditary hemophilia that makes platelets weak, or other drugs that injure blood vessels, making platelets function abnormally; third, abnormal coagulation function, some diseases that affect coagulation, such as hemophilia or severe liver disease, can lead to more anticoagulant substances in the blood, resulting in body bruising. If long-term bruising does not dissipate, you need to promptly seek medical examination.