Olfactory impairment in Parkinson's disease.
In comparison with closely matched controls, patients with Parkinson's disease had reduced scores in tests of odor detection and qualitative discrimination. Olfactory impairment was not related to age, duration of symptoms, treatment, intellectual function, or genetic factors and seemed to be a nonmotor manifestation of the disease.
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000503:physiopathology*; D012903:Smell