Tiny punctate hemorrhages, 1 to 3 mm, round and discrete, dark red, purple, or brown in color. Caused by bleeding from superficial capillaries; will not blanch. May indicate abnormal clotting factors. In dark-skinned people, petechiae are best visualized in the areas of lighter melanization (e.g., the abdomen, buttocks, and volar surface of the forearm). When the skin is black or very dark brown, petechiae cannot be seen in the skin.