Dizziness, or vertigo, is a sensation and experience of spinning in the sky, or feeling yourself shaking, or feeling objects around you shaking, such as a house shaking, a bed shaking, etc. If you suddenly experience vertigo, don’t be nervous yet because most vertigo disorders are benign diseases that can be cured. In particular, benign paroxysmal positional vertigo (BPPV, also known as otoliths) is the most common cause, accounting for more than 60% of all vertigo patients-that is, if you just have vertigo, you have a 60% or higher chance of having benign paroxysmal positional vertigo (BPPV). Most BPPV heals completely within 1 week, but sometimes it lasts for several weeks, so prompt access to medication and repositioning treatment is also necessary. The dizziness associated with head position change, nausea and vomiting are common, and blood pressure may also rise reflexively, but there should be no auditory symptoms such as tinnitus and deafness, and no symptoms of cerebrovascular disease such as hemiplegia, aphasia, diplopia, etc. Second, according to the following chart in bed with sitting to supine position, determine whether it is BPPV and the left and right side of the lesion. 1.Pillow under the shoulder, head to the left at an angle of 45 degrees, lying backward, if vertigo appears in this position, it indicates BPPV and the lesion is on the left side. 2.Pillow under the shoulder, head to the right at an angle of 45 degrees, lying backward, if vertigo appears in this position, it indicates BPPV and the lesion is on the right side.