Purpura

Purpura is a condition characterized by the appearance of purple-colored spots on the skin or mucous membranes caused by small blood vessels bleeding underneath the skin. Purpura spots, also known as petechiae, are typically 0.5–1 cm in diameter.

Causes

Purpura can be caused by a number of conditions, including inflammation of the blood vessels (also known as vasculitis), abnormalities in blood clotting, and certain medications. It can also be a symptom of a number of diseases, such as Henoch-Schönlein purpura, immune thrombocytopenic purpura, and thrombotic thrombocytopenic purpura.

Symptoms

The primary symptom of purpura is the appearance of purple spots on the skin or mucous membranes. These spots do not blanch when pressure is applied. Other symptoms can include fever, joint pain, and abdominal pain, depending on the underlying cause.

Diagnosis

Diagnosis of purpura typically involves a physical examination and a review of the patient's medical history. Additional tests may be performed to determine the underlying cause, such as blood tests, skin biopsy, and urinalysis.

Treatment

Treatment for purpura depends on the underlying cause. In some cases, no treatment is necessary and the spots will fade on their own. In other cases, treatment may involve medications to reduce inflammation or to treat the underlying disease.

See also

• Petechia
• Ecchymosis
• Hematoma

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