There is a kind of dizziness that is benign and self-limiting, mostly seen in young adults and the elderly, and is triggered by sudden head rotation or turning over, with a feeling of spinning, nystagmus, nausea and vomiting, sweating, lasting for a few seconds, or improving immediately when changing position. Paroxysmal positional vertigo”. In folklore, benign paroxysmal positional vertigo is often called “otolithiasis”, which, as the name implies, is a small stone growing inside the ear. In fact, there are three very special tubes inside our ears that have been put together, namely the semicircular canals! Isn’t it very much like a snail? These tubes are filled with flowing lymphatic fluid, and if a very small stone grows inside, then this small stone will keep traveling inside the tube with the turning of the head or the change of body position, causing paroxysmal dizziness, and now you know why turning your head or turning over may cause sudden dizziness and spinning. Therefore, using the mobility of the stone in the semicircular canal, it is clinically possible to reset the stone by manipulation, that is, the physician helps the stone to pour out of the semicircular canal by specific techniques, and the dizziness is cured.