What is Migraine-Associated Vertigo (MAV)?

Migraine-Associated Vertigo (MAV), often referred to as Vestibular Migraine, is a condition characterized by recurrent episodes of dizziness and vertigo in individuals with a history of migraine. Unlike typical migraine attacks that primarily manifest as a headache, MAV primarily affects the vestibular system, responsible for balance and spatial orientation. While a headache may or may not accompany the dizzy spells, the defining feature is the connection to migraine mechanisms.

Symptoms and Presentation

The hallmark symptom of MAV is vertigo – a sensation of spinning, swaying, or tilting, either of oneself or of the surroundings. This can range from mild unsteadiness to severe disorienting spells that impair daily activities. Episodes can vary widely in duration, from seconds to several days, though most commonly they last minutes to hours. Other symptoms frequently experienced include:

• Generalized dizziness or lightheadedness.
• Motion sickness, even with minimal head movement.
• Nausea and vomiting during episodes.
• Sensitivity to light (photophobia) and sound (phonophobia), common migraine features.
• Tinnitus (ringing in the ears) or a feeling of ear fullness.
• Headache, which might occur before, during, or after the vertigo, or be entirely absent.
• Visual aura, such as flashing lights or zigzag lines, similar to those experienced in migraine with aura.

It is crucial for accurate diagnosis to differentiate MAV from other causes of dizziness and vertigo, such as Benign Paroxysmal Positional Vertigo (BPPV), Meniere's disease, or inner ear infections, as treatment strategies differ.

Diagnosis of MAV

Diagnosing MAV relies primarily on a thorough medical history and the exclusion of other vestibular disorders. There is no specific diagnostic test. Healthcare providers typically look for:

• Recurrent vestibular symptoms (e.g., vertigo, dizziness, imbalance).
• A current or past history of migraine attacks with or without aura.
• At least half of the vestibular episodes are associated with at least one migraine feature (e.g., headache, photophobia, phonophobia, visual aura).

Audiometric and vestibular function tests may be conducted to rule out other inner ear pathologies.

Treatment and Management

The management of MAV typically involves a comprehensive approach similar to that for classical migraine, aiming to reduce the frequency and severity of vertigo attacks. Treatment options include:

• Lifestyle Modifications: Identifying and avoiding individual triggers, which can include certain foods, stress, lack of sleep, or hormonal fluctuations. Adopting a consistent sleep schedule and regular exercise are often beneficial.
• Acute Medications: For active episodes, medications used to abort migraine attacks, such as triptans, NSAIDs, or anti-nausea drugs, may be prescribed. Vestibular suppressants can offer temporary relief from severe dizziness.
• Preventive Medications: For individuals experiencing frequent or debilitating episodes, daily preventive medications are often recommended. These can include beta-blockers, calcium channel blockers, tricyclic antidepressants, anti-seizure medications, and newer CGRP inhibitors, which are effective in migraine prophylaxis.
• Vestibular Rehabilitation Therapy (VRT): This specialized physical therapy helps the brain adapt to and compensate for vestibular dysfunction, improving balance and reducing chronic dizziness.

Living with MAV can be challenging due to its unpredictable nature and impact on daily life. However, with an accurate diagnosis and a personalized management plan, individuals can significantly improve their quality of life and effectively manage the debilitating symptoms of dizziness and vertigo associated with migraine.