Parkinsonian facies
The parkinsonian facies is characteristic:
- palpebral fissures are wider than normal
- the facial muscles are unusually immobile
- eyes have a staring quality, partly a result of the reduction in the frequency of ocular eye movements
- the glabellar tap reflex fails to habituate - the parkinsonian patient will blink in time with the taps for as long as the stimulus is applied.
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