Parkinson's disease (PD) and dementia with Lewy bodies are currently defined by clinical features, which can be heterogeneous and do not capture the presymptomatic phase of neurodegeneration. Recent ...

Alberto J. Espay, MD, MSc, discusses a new biological definition of Parkinson's disease that is based on pathology identified through spinal fluid testing. The test uses the principles of ...

Parkinson’s is a neurological movement disorder caused by environmental and genetic factors that change the brain’s chemical makeup. Parkinson’s can cause movement problems and nonmotor symptoms, ...

Parkinson's disease is most well-known and well-studied for its motor impairments - tremors, stiffness and slowness of movement. But less visible symptoms such as trouble with memory, attention and ...

Parkinson’s disease is a neurodegenerative movement disorder that progresses relentlessly. It gradually impairs a person’s ability to function until they ultimately become immobile and often develop ...