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Dictionary » P » Parkinsons disease

Parkinsons disease

Parkinson's disease

(Science: neurology) A progressive, neurological disease first described in 1817 by james Parkinson.

The pathology is not completely understood, but there appears to be consistent changes in the melanin-containing nerve cells in the brainstem (substantia nigra, locus coeruleus), where there are varying degrees of nerve cell loss with reactive gliosis along with eosinophilic intracytoplasmic inclusions (Lewy bodies). Biochemical studies have shown below normal levels of dopamine in the caudate nucleus and putamen.

symptoms include shuffling gait, stooped posture, resting tremor, speech impediments, movement difficulties and an eventual slowing of mental processes and dementia.


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