title: Parasitic arthritis induced by Strongyloides stercoralis.
abstract: A 40-year-old man presented with palpable purpura and symmetrical polyarticular arthritis. Histological examination of the synovial membrane and fluid unexpectedly disclosed Strongyloides stercoralis infestation of the ankle joint.
mesh_terms: D000328:Adult; D000843:Ankle Joint; D001170:Arthritis, Infectious / Q000209:etiology*; D006801:Humans; D008297:Male; D013322:Strongyloidiasis