Petechiae, Purpura and Vasculitis
Petechiae, Purpura and Vasculitis
Petechiae, Purpura and Vasculitis
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Polyarteritis Nodosa<br />
• Polyarteritis Nodosa (PAN) is a potentially systemic<br />
disorder of necrotizing vasculitis of medium-sized<br />
arteries<br />
• Characterized by painful subcutaneous nodules, which<br />
can ulcerate<br />
• Patients may also present with livedo reticularis<br />
• Unknown etiology; may affect any organ (most often<br />
skin, peripheral nerves, kidneys, joints, <strong>and</strong> GI tract)<br />
• PAN has been associated with HBV, HCV, HIV,<br />
parvovirus B19, Crohn’s disease, strep <strong>and</strong> TB<br />
infections <strong>and</strong> medications (minocycline)