Laryngeal Uhthoff's phenomenon: a case report.
An Uhthoff-like phenomenon was recently observed in a patient with clinically definite MS who experienced transient dysphonia brought on by exertion and relieved by cooling. The patient's dysphonia was felt to be related to intermittent temperature-dependent conduction block associated with a demyelinating plaque in the region of the left nucleus ambiguus. We have termed the patient's intermittent dysphonia 'laryngeal Uhthoff's phenomenon'.
Pringle
C E
CE
Division of Neurology, University of Ottawa, Ontario, Canada.
McEwan
L M
LM
Ebers
G C
GC
D001831:Body Temperature / Q000502:physiology; D003711:Demyelinating Diseases / Q000150:complications; D015444:Exercise; D005260:Female; D006801:Humans; D007818:Laryngeal Diseases / Q000209:etiology* / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000150:complications / Q000473:pathology; D014832:Voice Disorders / Q000209:etiology* / Q000503:physiopathology