Hi there... I can understand your concern. The bruises usually me purpuras or ecchymoses. They appear as dark red lesions but do not raise above the surface of the skin. If it is purpura or ecchymoses then it could be due to some platelet or coagulation disorder. You will need clinical examination of the lesions and further blood tests link platelet count, bleeding time, clotting time, pt, aptt and inr. But kindly consult a general physician personally once before getting the tests done