Sense of Smell Declines With REM Sleep Disorder, But Patients Unaware

People with REM sleep behavior disorder (RBD) — an early nonmotor symptom of Parkinson’s disease — were significantly more likely than others to wrongly think their sense of smell was normal when olfactory deficits were evident, a small study found. Parkinson’s patients with RBD also had a diminished sense…

Motor Dysfunction Among the Predictive Markers of Parkinson’s for People with Sleep Disorder, Study Reports

Mild cognitive impairment, motor and olfactory deficits, and erectile dysfunction are among the markers able to predict the development of Parkinson’s and associated disorders in people with rapid eye movement sleep behavior disorder, according to a large study. The research was published in the article, “Risk…

Poor Sense of Smell Evident in Parkinson’s Patients in Small Study, But Not Linked to Dementia

Olfactory deficits — a diminished sense of smell — affected 95% of Parkinson’s disease patients in a small study, but such problems did not appear to be linked to cognitive impairment or disease-related dementia. The study, “Association between olfactory loss and cognitive deficits in Parkinson’s disease,” was…