Benign Recurrent Vertigo (BRV) is a perplexing condition characterized by repeated, spontaneous episodes of vertigo. Unlike some forms of dizziness, the vertigo in BRV is typically intense, rotational, and can be quite debilitating during an attack. The "benign" in its name refers to the fact that it is not caused by a life-threatening underlying condition, though its impact on daily life can be significant.

The Nature of Recurrent Vertigo

A key feature of BRV is its recurrent nature. Individuals experience distinct episodes of vertigo interspersed with periods of complete normalcy. These attacks vary in duration, from minutes to hours, and can sometimes last for a day or more. The unpredictability of these episodes is a major source of anxiety for those affected.

BRV and Migraine Connections

There is a strong, well-established link between BRV and migraine. Many experts consider BRV to be a manifestation of migraine in the inner ear or balance system, even in the absence of a typical headache. This connection is why BRV is often discussed under the umbrella of vestibular migraine, a broader category that encompasses various forms of migraine-related dizziness.

The term Basilar Artery Migraine (BAM), or Migraine with brainstem aura, is sometimes used to describe migraine variants that present with brainstem symptoms, which can include vertigo, tinnitus, ataxia, and other neurological signs. Historically, these symptoms were attributed to dysfunction in the basilar artery, although current understanding points more towards neural mechanisms within the brainstem itself. Dr. Bickerstaff was a pioneer in describing these complex migraine presentations, and sometimes the term bickerstaff migraine is still encountered in discussions of migraine with prominent brainstem symptoms.

Symptoms Beyond Vertigo

While vertigo is the hallmark symptom, individuals with BRV may experience other migraine-related symptoms during or around an attack. These can include headache, although not always prominent or severe, phonophobia (sensitivity to sound), photophobia (sensitivity to light), or auras. Another related condition sometimes seen in conjunction with migraine disorders, particularly in children but also in adults, is cyclic vomiting. This involves severe, recurrent bouts of nausea and vomiting without an identifiable gastrointestinal cause, further highlighting the systemic nature of migraine.

Diagnosis and Management

Diagnosing BRV involves a careful clinical history, ruling out other causes of recurrent vertigo through physical examination and sometimes specialized tests. The diagnosis is largely clinical, based on the characteristic pattern of recurrent, spontaneous vertigo attacks and often a history or family history of migraine. Management strategies frequently overlap with those used for migraine, including lifestyle modifications, avoidance of triggers, and sometimes prophylactic medications to reduce the frequency and severity of attacks. Acute treatments can also be used to alleviate symptoms during an episode.

Basilar Artery Migraine (BAM)

Basilar Artery Migraine, now more commonly known as Migraine with brainstem aura, describes a type of migraine characterized by an aura that originates from the brainstem. Symptoms can include vertigo, dysarthria (speech difficulties), tinnitus, hypoacusis (decreased hearing), diplopia (double vision), ataxia, and bilateral sensory symptoms. These symptoms are typically transient and fully reversible.

Bickerstaff Migraine

The term Bickerstaff migraine historically referred to a specific form of migraine with prominent brainstem symptoms, first described by Dr. Edwin R. Bickerstaff. His work helped to categorize migraine variants that presented with complex neurological signs, which included episodes of vertigo, visual disturbances, and other brainstem-related phenomena. While the terminology has evolved, his contributions remain foundational in understanding these conditions.