Uthoff noticed that patients with multiple sclerosis (MS) may have a decrease in vision associated with a change in body temperature.
Conditions that may cause an increase in body temperature:
(1) exercise
(2) use of the sauna
(3) fever
(4) bathing in hot water
Features of the phenomenon:
(1) during an increase in body temperature the patient notices "black spots" in the visual fields of one or both eyes or a decrease in visual acuity
(2) vision returns to normal once the body temperature returns to normal
Other visual problems that occur in MS patients during a rise in body temperature:
(1) nystagmus
(2) abnormalities in saccadic velocity and pursuit eye movements
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Specialty: Neurology, Immunology/Rheumatology
ICD-10: ,
