Petechiae, Purpura and Vasculitis
Petechiae, Purpura and Vasculitis
Petechiae, Purpura and Vasculitis
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HSP: Diagnosis <strong>and</strong><br />
Evaluation<br />
• Diagnosis often made on clinical presentation<br />
+/- skin biopsy<br />
• Skin biopsy shows leukocytoclastic vasculitis in<br />
postcapillary venules (small vessel disease)<br />
• Immune complexes in vessel walls contain IgA<br />
deposition (the diagnostic feature of HSP)<br />
• Rule out streptococcal infection with an ASO or<br />
throat culture
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