<prompt> In which of the following palpable purpura is not seen?HSPScurvyMixed cryoglobulinemaITP  <response>: 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 