Clinics of NeurologyClinics of NeurologyCONTROVERSY exists as as to whether Parkinson disease (PD) and dementia with Lewy bodies (DLB), which include diffuse Lewy entire body sickness plus a Lewy body variant of Alzheimer ailment (Advert),1 depict two distinctive nosologic entities or whether they exist along the spectrum of a single ailment, Lewy