“Benign paroxysmal positional vertigo (BPPV) is a common inner ear disorder. BPPV isn’t a sign of a serious problem, and it usually disappears on its own within a few days of the first episode. (It could take several weeks for some people.) However, the symptoms of BPPV can be very frightening and may be dangerous, especially in adults over the age of 65. The unsteadiness of BPPV can lead to falls, which are a leading cause of fractures.

Benign paroxysmal positional vertigo is the most common inner ear disorder. In fact, approximately 20% of people who are evaluated for dizziness are diagnosed with BPPV.  BPPV usually goes away on its own. However, until it’s successfully treated, it can come back. In some cases, months — or even years — go by before another episode occurs.  BPPV is almost always triggered by a change in your head’s position. Some people may notice symptoms when lying down or sitting up in bed. Others might notice symptoms when they tilt their head back or to the side. These symptoms often worsen with age due to normal wear and tear of the inner ear structures.”

Cleveland Clinic (Benign Paroxysmal Positional Vertigo (BPPV): Treatment, Symptoms & Causes)