Comorbidities of migraine: Sleep disorders.

Sleep disorders are commonly found as comorbid problems in patients with migraine. Indeed, there are likely to be numerous levels of interaction between migraine and sleep, including physiological, pathological, and pharmacological. Of note, the presence of sleep disorders may be a modifiable factor in the trajectory of migraine, and therefore active enquiry to elicit their presence, and manage them appropriately, could be an important component in the holistic care of patients with migraine. This review attempts to provide an outline of what is known about these relationships and highlight where relevant which facets could be exploited for therapeutic gain.