Published online by Cambridge University Press: 05 March 2022
Lewy body disease, an α-synucleinopathy, is the neuropathological counterpart of idiopathic Parkinson’s disease and one of the most frequent neurodegenerative diseases in humans [1]. Parkinson’s disease features compelling motor symptoms. Parkinson summarized these symptoms under the mixed Greek-Latin term paralysis agitans (shaking palsy) [2], and for decades, these motor symptoms described by Parkinson remained the most studied features of Lewy body disease.
However, autonomic dysfunctions and non-motor symptoms associated with Lewy body disease are frequent and often pre-date the onset of motor diseases [3]. Autonomic dysfunctions comprise constipation, bowel dysfunction, seborrheic face, dysphagia, dysarthria, impotence, urinary frequency, bladder dysfunction, orthostatic hypotension, and increased sweating. Other non-motor symptoms include sleep disorders (REM behavior disorder, vivid dreams, daytime drowsiness, sleep fragmentation cognitive impairment, bradyphrenia, tip-of-the-tongue (word-finding) phenomenon, depression, apathy, anhedonia, fatigue, behavioral and psychiatric problems, sensory symptoms including anosmia, ageusia, pain (shoulder, back), and paresthesias [4].
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