Parkinson’s-Dementia is also known as Parkinson’s disease and is a neurodegenerative disorder characterized by tremors, impaired postural imbalance, dementia, wobbly movements and loss of voluntary motor control. Though Parkinson’s-Dementia is considered to be a motor disorder, there are several non-motor signs that may cripple the patient. This disorder tends to affect approximately 1 percent of the general population above the age of 60. Almost 40 percent of the patients affected by Parkinson’s disease are also affected by dementia during the later course of the disease. The risk of the development of dementia in patients with Parkinson’s disease is almost 6 times higher than non-PD patients.

Parkinson’s-Dementia is characterized by dysexecutive syndrome affecting mainly the executive and Visio spatial functions while the memory is preserved. Early in the course of the disease, the patient is alert and fairly well attuned to the events of the environment. Episodic (memory for events) but not necessarily semantic (language and concept) memory functioning is typically affected in the early stages, especially memory for recent events. Patients with this disorder also show increasingly marked deficits in abstract thinking, the acquisition of new knowledge or skill, Visio spatial comprehension, motor control, problem solving and judgment. Personality deterioration and loss of motivation accompany these other deficits. Normally, the disorder is also accompanied by impairment in emotional control and in moral and ethical sensibilities. The disorder may be progressive or static, more often the former. Occasionally, it is even reversible. Its course depends to a large extent on its underlying causes.

The factors causing Parkinson’s-Dementia are many and varied. They include degenerative processed that usually, but not always, affect older individuals. Other causes may be repeated cerebrovascular accidents (strokes), certain infectious diseases such as syphilis, meningitis and AIDS, intracranial tumors and abscesses, certain dietary deficiencies, severe or repeated head injury, anoxia )lack of oxygen) and the ingestion or inhalation of toxic substances.