A 2-year-old boy develops the following symptoms: petechiae, purpura, and nosebleeds.The platelet count is 18,000.The most likely explanation is:

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Idiopathic thrombocytopenic purpura (ITP) is a common cause of thrombocytopenia in children, often presenting with petechiae, purpura, and bleeding such as nosebleeds, with a significantly reduced platelet count, as described in the scenario.

A 2-Year-Old Boy Develops the Following Symptoms: Petechiae, Purpura, and Nosebleeds.The