<prompt> Which of the following isare not the features of henoch-Schonlein purpura HSPAbdominal painSplinter hemorrhageThrombocytopeniaEpistaxis  <response>: HSP is characterized by tetrad of palpable purpura, arthritis, glomerulonephritis and abdominal pain.Less common skin lesions are : nonpalpable macules patches, urticaria, bullous lesions, vesicles, splinter hemorrhage and ulcerations.Rarely epistaxis may occur. 