Pinpoint hemorrhage in the skin producing a red lesion less than 2 mm in size.

This occurs with thrombocytopenia or severe platelet dysfunction and is typically seen in dependent areas such as the lower extremities and under the breasts or, in a bedridden patient, the flanks.

Hemorrhage into the skin or subcutaneous tissue producing a purplish discoloration of the skin, commonly known as a bruise.

This can occur with platelet disorders, coagulation abnormalities, or various nonhemostatic disorders. Weakening of the blood vessels or surrounding tissues, such as is seen in vitamin C deficiency, corticosteroid excess, Ehlers-Danlos syndrome and old age, can allow increased extravasation of blood causing purpura.