In which of the following palpable purpura is not seen?
Correct Answer: ITP
Description: ITP causes non palpable purpura. Palpable purpura is the hallmark lesion of leukocytoclastic vasculitis (small vessel vasculitis) Causes of palpable purpura: Vasculitis Cutaneous small vessel vasculitis PAN Emboli Acute meningococcemia Disseminated gonococcal infection Rocky mountain spotted fever Ecthyma gangrenosum Causes of non-palpable purpura: Clotting disturbances Vascular fragility Thrombi Emboli Possible immune complex
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