parkinsonism signs and symptoms

we will talk about parkinsonism signs and symptoms

Parkinsonism is a clinical syndrome characterized by tremor, bradykinesia, rigidity, and postural instability.
 Parkinsonism shares symptoms found in Parkinson's disease, from which it is named; but parkinsonism is a symptom complex, and differs from
 Parkinson's disease which is a progressive neurodegenerative
 illness. The underlying causes of parkinsonism are numerous, and diagnosis can be complex.

 The neurodegenerative condition Parkinson's disease (PD)
is the most common cause of parkinsonism. However, a wide
 range of other etiologies may lead to a similar set of symptoms,
 including some toxins, a few metabolic diseases, and a handful
of neurological conditions other than Parkinson's.

About 7% of people with parkinsonism have developed their symptoms following treatment with particular medications. Side effect of medications, mainly neuroleptic antipsychotics especially the phenothiazines (such as perphenazine and chlorpromazine), thioxanthenes (such as flupenthixol and zuclopenthixol) and butyrophenones (such as haloperidol), piperazines (such as ziprasidone), and rarely, antidepressants. The incidence of drug-induced parkinsonism increases with age. Drug-induced parkinsonism tends to remain at its presenting level, not progress like Parkinson's disease.