Central Vestibular Dysfunction—Type 1 Chiari Malformation
FP, a 30-year-old male, is referred for audiological and VNG examinations. He reports multiple daily episodes of dizziness lasting less than 30 seconds and most often occurring after some degree of exertion, such as exercising or cleaning the house. When describing the dizziness, FP confirms there is no perception of rotation, either of himself or of his environment. He reports his head is “swimming” and he is unable to focus. There is no accompanying nausea or vomiting, and he denies any hearing concerns and any perceptible changes in hearing during his episodes of dizziness. FP states he first noticed his dizziness almost 3 years ago, but he has recently become concerned because the “dizzy spells” are now occurring several times a day. FP states this problem is beginning to interfere with his quality of life, which is what prompted his visit to his physician.