Benign paroxysmal positional vertigo

Benign Paroxysmal Positional Vertigo (BPPV) is a common inner ear disorder characterized by brief, episodic feelings of vertigo (a spinning sensation), which are triggered by specific changes in the position of the head. It's typically provoked by maneuvers such as turning over in bed, tilting the head upward, or transitioning from lying down to standing.

Symptoms

The primary symptom of BPPV is a sensation of spinning or vertigo, which occurs in response to changes in head position. This sensation typically lasts less than a minute but can be quite intense. Accompanying symptoms can include:

• Nausea, often associated with the vertigo
• Unsteadiness or loss of balance, particularly when moving
• Rarely, a sense of faintness or lightheadedness

Causes

BPPV is caused by displacement of small calcium carbonate crystals, known as otoconia, within the inner ear. These crystals can migrate into the semi-circular canals, where they are not typically found. When the head moves, these crystals shift, resulting in an abnormal sensation of motion.

Diagnosis

Diagnosis of BPPV is primarily based on the individual's history of vertigo episodes and the findings of specific physical examination maneuvers, such as the Dix-Hallpike test or the roll test. These tests involve reproducing vertigo and observing characteristic eye movements, known as nystagmus, that accompany the sensation of vertigo in BPPV.

Treatment

Treatment for BPPV usually involves a series of physical maneuvers performed by a trained healthcare professional. These maneuvers, such as the Epley or Semont maneuver, aim to move the displaced otoconia out of the semi-circular canals and into an area of the inner ear where they will not cause vertigo. In most cases, these procedures are successful in relieving symptoms. In rare cases where these maneuvers are not effective, surgical treatments may be considered.

Prognosis

BPPV generally has a good prognosis. Most people recover with treatment, but some may experience recurrent episodes over time. Regular follow-up with a healthcare provider is recommended for people with BPPV to monitor for recurrence and manage any ongoing symptoms.

See also

• Vertigo
• Inner Ear
• Dix-Hallpike test
• Epley maneuver

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