![]() Such lesions include (1) petechia (less than 3 mm (0.12 in), resulting from numerous and diverse etiologies such as adverse reactions from medications such as warfarin, straining, asphyxiation, platelet disorders and diseases such as cytomegalovirus) and (2) purpura (3–10 mm (0.12–0.39 in)), classified as palpable purpura or non-palpable purpura and indicating various pathologic conditions such as thrombocytopenia. īruises are not to be confused with other similar-looking lesions. Bruises which do not blanch under pressure can involve capillaries at the level of skin, subcutaneous tissue, muscle, or bone. The bruise then remains visible until the blood is either absorbed by tissues or cleared by immune system action. Most bruises occur close enough to the epidermis such that the bleeding causes a visible discoloration. RICE ( rest, ice, compression, and elevation)Ī bruise, also known as a contusion, is a type of hematoma of tissue, the most common cause being capillaries damaged by trauma, causing localized bleeding that extravasates into the surrounding interstitial tissues. ![]() Bruise on upper leg caused by a blunt object ![]()
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