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Petechia of the lower leg in a person with platelets of 3 due to ITP (immune thrombocytopenia).The most common cause of petechiae is through physical trauma such as a hard bout of coughing, holding breath, vomiting, or crying, which can result in facial petechiae, especially around the eyes.
Signs of ITP include the spontaneous formation of bruises and petechiae (tiny bruises), especially on the extremities. Additionally, bleeding from the nostrils and/or gums, as well as menorrhagia (excessive menstrual bleeding), may occur if the platelet count falls below 20,000 per μL. [4]
Purpura (/ ˈ p ɜːr p jʊər ə / [1]) is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes. [2]
The rash consists of numerous small, irregular purple or red spots ("petechiae") on the trunk, lower extremities, mucous membranes, conjunctiva, and (occasionally) the palms of the hands or soles of the feet.
Petechiae What it looks like : “Petechiae is essentially blood leakage into the skin,” explains Dr. Lal. It looks like small red blotches or tiny, red pinpoint marks on the skin.
Majocchi's disease, also known as Purpura annularis telangiectodes of Majocchi [1] is a not-well-recognized and uncommon skin condition characterized by purple/bluish-red 1- to 3-cm annular patches composed of dark red telangiectases with petechiae.
Waldenström hyperglobulinemic purpura is a skin condition that presents with episodic showers of petechiae (small red or purple spots) occurring on all parts of the body, most profusely on the lower extremities. [1]: 823 [2]
Schamberg's disease is a skin disorder that causes a discoloration of the lower extremities. [4] It usually occurs in the lower extremities and rarely elsewhere. [4] This condition is caused by leaky blood vessels near the surface of the skin. [7] The cause of the leaky capillaries is usually not known. [7]