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Idiopathic thrombocytopenic purpura (ITP)

  • Alternative Names

    Immune thrombocytopenic purpura; ITP

    • Abnormally heavy menstruation
    • Bleeding into the skin causes a characteristic skin rash that looks like pinpoint red spots (petechial rash)
    • Easy bruising
    • Nosebleed or bleeding in the mouth

    Signs and tests

    Laboratory tests will be done to see how well your blood clots and to check your platelet count.

    • A complete blood count (CBC) shows a low number of platelets.
    • Blood clotting tests (PTT and PT) are normal.
    • Bleeding time is prolonged.
    • Platelet associated antibodies may be detected.

    A bone marrow aspiration or biopsy appears normal or may show a greater than normal number of cells called megakaryocytes. These cells are an early form of platelets.