Petechiae

From WikiLectures

Petechiae on the lower limb in a patient with idiopathic thrombocytopenic purpura

Petechiae are tiny blood outgrowths in the skin the size of a pinprick, often appearing as multiple dots on the skin - purpura . They do not protrude above the surface of the skin and do not fade when pressed. They appear as a result of a decrease in the resistance of the capillary walls (congenital, immunological, toxic, caused by hypovitaminosis C) and platelet disorders ( thrombocytopenia , thrombocytopathy ).


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