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  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

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Philadelphia neurologist Morris Lewis (1852 to 1928)

Lewis worked with S. Weir Mitchell in applying measurements of postural sway to clinical studies of tabetic patients. (Photograph courtesy of the College of Physicians of Philadelphia.)

Associated Disorders

  • Ataxia
  • Binswanger disease
  • Dysequilibrium
  • Myasthenia gravis
  • Myelopathy
  • Myopathies
  • Neuropathy
  • Normal pressure hydrocephalus
  • Parkinsonism
  • Psychogenic movement disorders
  • Stroke
  • Vestibular disorders