Clinical Review

Diagnosis and Management of Vestibular Migraine


 

References

Cognitive Behavioral Therapy

Cognitive behavioral therapy (CBT) has been shown to be helpful as part of the holistic treatment of various disorders including post-concussive syndrome and depression in neurology patients [79,80]. Among patients suffering from dizziness, a small study comparing explicit CBT combined with VRT versus waiting-list controls demonstrated improvements in patients’ coping ability, function, symptoms, and care satisfaction [81]. However, to our knowledge there are no studies directly evaluating the benefits of CBT specifically in VM patients. Despite this, it is our practice to request CBT for VM patients who report disabling anxiety or depressive symptoms.

Prognosis

Although migraine in general can improve in later life, this is less certain with VM given the lack of good quality longitudinal studies. Recently Radtke and colleagues published their long-term (median, 9 years) follow-up study of 61 definite VM cases (28). They found that 87% of patients had recurrent vertigo at follow-up. The frequency of vertigo was reduced in 56%, increased in 29%, and unchanged in 16% of patients. The impact of vertigo was graded as severe in 21%, moderate in 43%, and mild in 36% of patients. However, they found that concomitant cochlear symptoms with vertigo had increased from 15% at study inception to 49% at follow-up and secondly, 18% of patients had developed mild bilateral low-frequency sensorineural hearing loss. Therefore, one major criticism of the study is whether some of the patients had MD as their eventual diagnosis rather than definite VM. On the contrary, the authors conclude that these changes represent new vestibulo-cochlear dysfunction as a result of VM disease progression. Due to these reasons, the prognosis of VM patients is unclear. It is our practice to ensure patients do receive delayed follow-up to allow consideration of other neurotological diagnoses.

Conclusion

Given the large heterogeneity in presentation and objective testing, VM as a diagnostic construct has remained quite controversial, though increasingly more accepted. The more we study this common vestibular condition, the more we are realising that the complex relationship between migraine and dizziness extend beyond VM to encompass other vestibular disorders such as MD and anxiety. The lack of a physiological biomarker contributes to its diagnostic difficulties, but a meticulous workup is important to exclude alternative vestibular diagnoses. More longitudinal studies and RCTs are required to help both understand the prognosis and management of VM patients.

Corresponding author: Benjamin K-T Tsang, MBBS, FRACP, The Prince Charles Hospital, Rode Road, Chermside, Queensland 4032, Australia, benjamim.tsang@health.qld.gov.au.

Financial disclosures: None.

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