What is vertigo

Overview

Vertigo is a specific type of dizziness characterized by the sensation that you or your environment are spinning or moving uncontrollably. Unlike general dizziness, vertigo involves a false perception of motion. It results from dysfunction in the vestibular system - the inner ear apparatus that controls balance and spatial orientation. Vertigo is not a disease itself but a symptom of an underlying condition affecting the balance system.

The Vestibular System

The inner ear contains specialized structures that maintain balance and equilibrium. Semicircular canals detect rotational head movements in three dimensions. Otolith organs (utricle and saccule) sense linear acceleration and head position. These structures communicate with the brain through the vestibular nerve to maintain balance and coordination. When this system malfunctions, the brain receives conflicting signals about body position, causing the sensation of vertigo.

Types and Causes

Benign Paroxysmal Positional Vertigo (BPPV) is the most common cause, occurring when calcium carbonate crystals dislodge in the inner ear semicircular canals. Vestibulitis involves inflammation of the vestibular nerve, typically following viral infections. Meniere's disease causes episodic vertigo with hearing loss, tinnitus, and ear fullness. Cervicogenic vertigo results from neck joint problems. Migraine-associated vertigo occurs in people with migraine headaches. Head trauma, medication side effects, and certain brain conditions can also trigger vertigo.

Symptoms and Diagnosis

Vertigo produces a spinning sensation ranging from mild to severe, often accompanied by nausea and vomiting. Patients may experience nystagmus (involuntary eye movements), difficulty walking, loss of balance, and falls. Some experience tinnitus or hearing loss. Diagnosis typically involves detailed medical history, physical examination including the Dix-Hallpike maneuver to provoke symptoms, and sometimes imaging like MRI or CT scans to rule out serious conditions.

Treatment and Management

Treatment depends on the underlying cause. Canalith repositioning procedures like the Epley maneuver are highly effective for BPPV, moving displaced crystals back to their proper position with success rates exceeding 80%. Vestibular rehabilitation therapy helps the brain compensate for inner ear dysfunction through specific exercises. Medications may reduce nausea and dizziness during acute episodes. Most vertigo cases resolve within weeks, though chronic cases from Meniere's disease require ongoing management.