NEURALGIA DE ARNOLD
Introduction: As much as its classifications and symptoms, there is also variation among the trigger factors already established in clinical practice and literature for migraine attacks. Objective: Describe the most prevalent trigger factors in patients suffering from chronic or episodic migraine and developing a comparative analysis of each factor among the groups. Method: In this prospective study, 361 patients have been included. All of them were seen at the Headache Center of the Teaching Hospital of Federal University of Sergipe from January 2006 to July 2008. For migraine diagnosis, it was used current clinical criteria suggested by the ICHD-2, and for statistical analysis, the Student T test, with p lower then 0.05. Results: Among the total of patients, 110 satisfied the inclusion criteria for chronic migraine and 251 for episodic migraine. Emotional issues were the most prevalent trigger factor in both migraine types. When chronic and episodic types of migraine were compared, there was no statistically significant difference for trigger factors frequency, except for sleep (p=0.0001) and smells (p=0.014). Conclusion: Both sleep and smells seem to trigger headache attacks more frequently among the patients with chronic migraine when compared with episodic migraine patients.