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Other motor symptoms include gait and posture disturbances such as decreased arm swing, a forward-flexed posture, and the use of small steps when walking; speech and swallowing disturbances; and other symptoms such as a mask-like facial expression or small handwriting are examples of the range of common motor problems that can appear. [1]
Hypomimia (masked faces, masking of faces, mask-like facial expression), a medical sign, is a reduced degree of facial expression. It can be caused by motor impairment (for example, weakness or paralysis of the facial muscles ), as in Parkinson's disease , or by other causes, such as psychological or psychiatric factors (for example, if a ...
Differential diagnosis Parkinson's disease Myerson's sign or glabellar tap sign is a clinical physical examination finding in which a patient is unable to resist blinking when tapped repetitively on the glabella , the area above the nose and between the eyebrows .
The afferent sensory signals are transmitted by the trigeminal nerve to the brain stem; the efferent signals go to the orbicularis oculi muscle via the facial nerve, causing the muscle to reflexively contract, yielding blinking. This reflex was first identified by Walker Overend. [4]
For some people with PD, masked facial expressions and difficulty moderating facial expressions of emotion or recognizing other people's facial expressions can impact social well-being. [266] As the condition progresses, tremor, other motor symptoms, difficulty communicating, or mobility issues may interfere with social engagement, causing ...
Parkinsonism is a clinical syndrome characterized by the four motor symptoms found in Parkinson's disease: tremor, bradykinesia (slowed movements), rigidity, and postural instability. [1] [2] Parkinsonism gait problems can lead to falls and serious physical injuries. Other common symptoms include:
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