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Harlequin syndrome in two athletes
  1. K E Fallon1,
  2. J J May2
  1. 1Australian Institute of Sport, Belconnen, ACT, Australia
  2. 2The Sports Medicine Centre, Turner, ACT, Australia
  1. Correspondence to:
 Associate Professor Fallon
 Department of Sports Medicine, Australian Institute of Sport, PO Box 176, Belconnen, ACT 2616, Australia;


Two cases are reported of harlequin syndrome, a disorder of the sympathetic nervous system in which sweating and flushing of the skin in response to exercise is diminished. This condition is most likely to be first noticed in sporting situations.

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  • Conflict of interests: none declared

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