title: Acute confusional state and hyponatraemia due to inappropriate antidiuretic hormone secretion in polyarteritis nodosa.
abstract: An acute confusional state, which developed in a patient with polyarteritis nodosa (PAN), proved to be secondary to inappropriate secretion of antidiuretic hormone and consequent hyponatraemia. This is a very unusual complication of PAN and may well reflect a direct stimulation of the supraoptic nuclei owing to cerebral vasculitis.
mesh_terms: D003072:Cognition Disorders / Q000209:etiology*; D003221:Confusion / Q000209:etiology*; D006801:Humans; D007010:Hyponatremia / Q000209:etiology*; D007177:Inappropriate ADH Syndrome / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D010488:Polyarteritis Nodosa / Q000150:complications*