Depression and Dementia
Effects of Parkinson's Disease

Parkinson’s Disease Dementia

Parkinson’s disease dementia is often difficult to differentiate from dementia due to other causes and it may be due to the disease itself or as a result of the drugs taken for the disease. Dementia is a state where there is loss of previously learnt functions, or progressively impaired memory, or a marked change in personality and may be accompanied by hallucinations or depression. In Parkinson’s disease the development of dementia is a late phenomenon, often occurring 10 to 15 years after onset of the disease, and it develops in about 20% of patients. Dementia is less likely to develop in early onset of Parkinson’s disease was below 50 and more likely if it symptoms of Parkinson’s disease started after the age of 70.