The standard clinical name for otolaryngitis is benign paroxysmal positional vertigo, which is a transient, paroxysmal vertigo with horizontal or rotational nystagmus that is triggered by a rapid movement of the head position to a specific position. The onset of vertigo in most patients is a sensation of spinning when getting up, falling backwards into bed or turning over in a certain direction in bed, accompanied by nausea and vomiting. The episodes of vertigo are brief, lasting a few seconds or tens of seconds, and rarely last more than a minute. The incidence of otoliths is about 64/10,000, and it is one of the most common types of vertigo, especially in middle-aged and elderly women who are most prone to attacks. However, due to the popularity and widespread use of computers, people who work at desk jobs for a long time have also become a risk group, so otoliths are becoming younger and younger, but the cause is unknown. Which part of the body is the problem of otoliths? It turns out that the inner ear, which is hidden inside the temporal bone of the human body, is an organ for maintaining balance in addition to its auditory function. The receptors for linear acceleration and gravity are the ellipsoidal and balloon sacs in the vestibule, each of which has a capsule with calcium carbonate crystals that feel changes in gravity and are shaped like stones, called otoliths. The receptors for angular acceleration are the three semicircular canals, which are angled at 90° to each other and all open in the vestibule. Due to head trauma or local structural degeneration, the otoliths are dislodged from their original vestibular position and fall into the semicircular canals. This causes vertigo when the head position changes. The most important clinical manifestations of otoliths are: 1. paroxysmal transient vertigo induced by specific head position changes. 2. 2. The duration of each episode is usually less than 1 minute. 3. There is a certain latency period, and symptoms usually appear only after a few seconds of head position change. 4. It is adaptive or easily fatigable, i.e., the degree of vertigo will be weakened after repeatedly changing to the stimulation position. 5. It is self-healing, and the condition may resolve on its own within weeks or months, but in a few cases it may last for several years. Through the medical history described by the patient, the doctor can basically make the initial judgment of otoliths, but the final diagnosis and clarification of the location of the otoliths will have to go through a rigorous examination. The location of the dislodged otolith varies and can exhibit nystagmus in different directions, which is the basis for otolith localization.