What are the initial motor signs of Parkinson disease (PD)?

Updated: Aug 29, 2019
  • Author: Robert A Hauser, MD, MBA; Chief Editor: Selim R Benbadis, MD  more...
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Onset of motor signs include the following:

  • Typically asymmetric

  • The most common initial finding is a resting tremor in an upper extremity

  • Over time, patients experience progressive bradykinesia, rigidity, and gait difficulty

  • Axial posture becomes progressively flexed and strides become shorter

  • Postural instability (balance impairment) is a late phenomenon

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