<prompt> Parkinson triad contains all EXCEPT: September 2012RigidityResting tremorsBradykinesiaPreserved postural reflexes  <response>: Ans. D i.e. Preserved postural reflexes Parkinsonism is a disorder of the extrapyramidal system, characterized by tremor, rigidity, bradykinesia and postural disturbances ParkinsonismParkinsons syndromeAtypical ParkinsonsSecondary Parkinsons It is a neurological syndrome not necessarily the specific disease characterized by tremor, hypokinesia, rigidity, and postural instability. The underlying causes of parkinsonism are numerous, and diagnosis can be complex. The neurodegenerative condition Parkinsons 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 ahandful of non-PD neurological conditions. 