CausesA fall, knock, or bump into a hard object can rupture or damage blood vessels. Ruptured blood vessels cause blood to pool, leading to ecchymosis.These injuries also frequently lead to bruising. Ecchymosis is different from bruising because it can result from factors other than injury. These include:anticoagulants, such as aspirin and warfarinvaricose veinssurgeryplatelet abnormalities, such as a low platelet countfractures and broken bonesend-stage kidney diseasehemophilia and other bleeding disordersleukemiadengue fever
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