![]() The most significant symptom is nystagmus as it is essential to determine the kind of nystagmus ( horizontal, vertical, or diagonal ) to select the correct cure maneuver. If those symptoms are present, a more serious etiology, such as posterior circulation stroke or ischemia, must be considered. People with BPPV do not experience other neurological deficits such as numbness or weakness. The most common movements people report triggering a spinning sensation are tilting their heads upward in order to look at something and when rolling over in bed. The spinning sensation experienced from BPPV is usually triggered by movement of the head, will have a sudden onset, and can last anywhere from a few seconds to several minutes. Purely horizontal nystagmus and symptoms of vertigo lasting more than one minute can also indicate BPPV occurring in the horizontal semicircular canal. Many are also capable of describing the exact head movements that provoke their vertigo. Many people will report a history of vertigo as a result of fast head movements.
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