The typical symptom is that when the head position changes or the body position changes, there is a sudden and brief vertigo attack, mostly rotational, which can be accompanied by nausea and vomiting, but the vertigo will disappear gradually after keeping the position unchanged, and the duration It rarely lasts more than one minute, but it will recur when the position changes. Most of them can be relieved spontaneously, but they can recur. It is important to rest in bed during the attack and reduce strenuous movements of the head and body.