Benign paroxysmal positional vertigo (BPPV) causes a whirling, spinning sensation even though you are not moving. If the vertigo is bad, it may also cause nausea or vomiting. The vertigo attacks happen when you move your head in a certain way, such as tilting it back or up or down, or by rolling over in bed. It usually lasts less than a minute. Moving your head to the same position again may trigger another episode of vertigo.
BPPV often goes away without treatment. Until it does, or is successfully treated, it can repeatedly cause vertigo with a particular head movement. Sometimes it will stop for a period of months or years and then suddenly come back.
It is possible that the main title of the report CADASIL is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.