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Parkinson's Disease (PD)

Conditions Related to Parkinson's Disease (PD)

A number of other movement disorders are related conditions of Parkinson’s disease (PD). Known as parkinsonism, these conditions produce symptoms that resemble PD, but have other causes. Among these are:

  • Postencephalitic parkinsonism resulting from encephalitis, an inflammation of the brain tissue
  • Drug-induced parkinsonism that may affect patients taking chlorpromazine or haloperidol for psychiatric problems. Some medications for high blood pressure, epilepsy and stomach problems produce symptoms of parkinsonism.
  • Toxin-induced parkinsonism possibly caused by carbon monoxide, carbon disulfide and manganese dust, factors that may exist in some work settings.
  • Post-traumatic parkinsonism resulting from a severe head injury or repeated blows to the skull
  • Arteriosclerotic parkinsonism caused by brain damage arising from multiple, small strokes

Another, very rare form is Parkinsonism-dementia complex of Guam. This especially aggressive type affects Chamorro natives of Guam and the Mariana islands.

A number of other related conditions of Parkinson’s that present similar symptoms include:

  • Essential tremor, not the same condition as PD or a precursor of the disease
  • Normal pressure hydrocephalus, an increase in pressure of the cerebrospinal fluid
  • Dementia with Lewy bodies, abnormal protein deposits in the brain
  • Parkinson’s-plus diseases that have signs of PD and other symptoms
    • Multiple system atrophy (MSA), several disorders that affect voluntary and involuntary muscles
    • Corticobasal degeneration caused by atrophy of the cerebral cortex and other areas of the brain
    • Progressive subnuclear palsy, also known as Steele-Richardson-Olszewski syndrome, results from the deterioration of nerve cells in the brain stem

Locations for Parkinson's Disease (PD)