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Introduction: Headache is one of the most frequent consultations in neurology. Some patients with headache report intolerance to passive mobilization, associated with dizziness, nausea, vomiting, known as motion sickness. These symptoms are caused by a conflict between the systems: visual, vestibular and somatosensitive. Objective: To determine the prevalence of motion sickness inpatients who consult due to headache. Method: Cross-sectional, retrospective and descriptive study. It included patients over 18 years of age, who consulted for headache at the Headache Clinic, during the period from January 2 to June 30, 2017, through a structured interview. Results: Of a total of 266 patients: 62 (23.30%) presented motion sickness (mean age 41.5 years; 80.6% werewomen). 14 described motion sickness only in childhood and 48 persisted with symptoms until the time of consultation. Among the patients with headache and motion sickness 52 (83.87%) presented migraine; 7 patients presented tension headaches; 2 in salvos; 1 undetermined The prevalence of migraine was higher in those who reported motion sickness only in childhood compared tothose who continued with motion sickness (85.7 vs. 56.25%, p = 0.045), 12.5% of patients with current motion sickness reported it as a migraine trigger, 204 patients did not have motion sickness (76.7%). Conclusion: We consider that in patients with headache it is important to identify motion sickness as it can be limiting and also be a migraine trigger. Its diagnosis and treatment wouldimprove the quality of life of our patients.

Objective: Headache is one of the most frequent reason for consultations in neurology. The global prevalence among adults with migraine is approximately 10% with migraine, 40% for tension-type headache (TTH) and 3% for chronic daily headache. The purpose of this study is to analyze the prevalence of the diagnoses of headache and craniofacial pain among patients evaluated in a specialized headache clinic of Buenos Aires during 2017. Methods: Retrospective, descriptive study. We reviewed the electronic medical records of patients who consulted for headaches or craniofacial pain from January 1st to December 31st, 2017. Diagnoses were made according to the criteria of the International Classification of Headache Disorders (ICHD-3). Results: We reviewed 3254 electronic medical records and documented 3941 diagnoses: headache (93.03%), craniofacial pain (3.62%) and unclassifiable (3.35%). The average age was 43.14 years. 80.7% were women. Primary headaches were the most frequent diagnoses (78.54%). Migraine represented the main diagnosis (87.42%). Episodic migraine without aura was the most prevalent diagnosis (48%). Tension- type headache (TTH) was found in 8.74% of cases of primary headaches and Trigeminal autonomic cephalalgias (TACs) in 2.89%. Medication-overuse headache (MOH) represented 77.93% of the secondary headaches, and most of them also met chronic migraine criteria fulfilled criteria of chronic migraine. Primary trigeminal neuralgia represented 50% of craniofacial pain and 27% were secondary trigeminal neuralgia, mostly postherpetic or posterior to dental procedures. Regardin to the frecuency, 33.58% of the patients had chronic headache. Conclusion: In our section, migraine is the most frequent diagnosis followed by medication-overuse headache. The percentage of chronic headache is higher than the prevalence in the general population, probably because it is a tertiary center.