Migraine-Associated Otalgia: An Underappreciated Entity.

Abstract

Background and objectives: Otalgia can be primary/otogenic or secondary as a referred pain from another site, which can be difficult to establish owing to various causes and the complex innervation of the ear. In our center, we observed a large group of patients with unexplained otalgia that had a higher prevalence of migraine. We hypothesized that migraine may cause secondary otalgia. This study then aimed to determine the prevalence of migraine-associated otalgia and evaluate the efficacy of migraine treatment.

Subjects and methods: This 2-year retrospective study was conducted at a busy otology clinic. Patients were identified using diagnostic codes corresponding to otalgia. The prevalence of migraine-associated otalgia was determined, and the efficacy of migraine treatment was evaluated in these patients. The interventions included prophylactic and abortive migraine treatments. Statistical analysis was conducted to compare between the pre- and post-treatment symptoms.

Results: A total of 208 patients with otalgia were identified. Sixty-four out of ninety patients with unexplained otalgia met the criteria for migraine; of them, 30 patients had an adequate follow-up and were thus included in the evaluation of treatment efficacy. Otalgia improved in 87% of the patients who received migraine treatment. After treatment, the mean pain score and headache frequency significantly decreased from 7 to 2 and from 27 to 9 days per month, respectively (p<0.001).

Conclusions: Migraine should be considered as a source of secondary otalgia, and patients should receive treatment as they often respond to migraine treatment.