What is a petechial rash? - Petechiae are flat, non-blanching, pinpoint spots (1โ2 mm) caused by capillary bleeding under the skin. - Because the blood is beneath the skin surface, petechiae cannot be felt and do not protrude. If it is raised A raised purplish lesion is not petechiae โ it is more consistent with: - Purpura (larger, >2 mm but <1 cm) - Palpable purpura โ especially seen in vasculitis - Urticaria (hives) with hemorrhagic component