Psoriatic arthritis with ANCA-positive vasculitis: a rare association

Psoriatic arthritis is an inflammatory arthropathy in patients with psoriasis. Although 8% of patients affected with psoriasis without vasculitic manifestations are positive for perinuclear antineutrophilic cytoplasmic antibody (P-ANCA), cutaneous vasculitis in psoriatic arthritis with a positive P-ANCA is rare. We report a case of a 46-year-old-man with a 25-year history of plaque psoriasis admitted with joint pain and rash. He was subsequently diagnosed as having psoriatic arthritis and leucocytoclastic vasculitis with positive ANCA and was treated with methotrexate and corticosteroids. We hereby highlight the association of vasculitis with positive ANCA in a patient with psoriatic arthritis.