The phenomenon of hyperthermia sometimes causes new neurological findings in patients with multiple sclerosis. A series of 12 patients with multiple sclerosis revealed changes in the electronystagmograms when tested under hyperthermic conditions as compared to ten controls.
Thomas R. Spooner, Richard L. Goode. The Hyperthermic Electronystagmogram in Multiple Sclerosis. Arch Otolaryngol. 1972;95(6):543–546. doi:10.1001/archotol.1972.00770080833008