Polyarteritis Nodosa

Key points

• Polyarteritis nodosa (PAN) is a vasculitis affecting medium- sized arteries with necrotizing inflammation leading to aneurysm formation. PAN is more common in middle-aged men and is associated with hepatitis B infection Features
• fever, malaise, arthralgia
• mononeuritis multiplex, sensorimotor polyneuropathy
• testicular pain
• livedo reticularis