What are the demographics of Lambert-Eaton myasthenic syndrome (LEMS)?

Updated: May 23, 2019
  • Author: David E Stickler, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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LEMS usually begins in later adulthood and is primarily a disease of middle-aged and older people. The most common age for the appearance of symptoms is 60 years. It is rare in children; however, at least 7 children younger than 17 years are reported to have had LEMS.

In earlier reports, LEMS occurred in males more frequently than females, by a ratio of almost 2:1. However, current reports note almost equal frequency in men and women.

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