-Objective: To analyze the demographic features of the population sample, the time of headache complaint until first consultation and the diagnosis of primary and secondary headaches. Method: 3 3 2 8 patients were analyzed re t rospectively and divided according to gender, age, race, school instruction, onset of headache until first consultation and diagnosis (ICHD-II, 2004). Results: Sex ratio (Female/Male) was 4:1, and the mean age was 40.7±15 years, without statistical diff e rences between sexes. Appro x i m a t e l y 65% of the patients were white and 55% had less than eight years of school instruction. Headache complaint until first consultation ranged from 1 to 5 years in 32.99% patients. The most prevalent diagnosis w e re migraine (37.98%), tension-type headache-TTH (22.65%) and cluster headache (2. 73%). C o n c l u s i o n :T h e re are few data on epidemiological features of headache clinic populations, mainly in developing countries. According to the literature, migraine was more frequent than TTH. It is noteworthy the low school instruction of this sample and time patient spent to seek for specialized attention. Hypnic headache syndrome was seen with an unusual frequency.KEY WORDS: headache, clinic-based study, epidemiology.Epidemiologia das cefaléias primárias e secundárias em um serviço terciário brasileiro. RESUMO -Objetivo:Analisar os aspectos demográficos da população em estudo, o tempo decorrido desde o início da queixa de cefaléia até a busca pelo serviço, assim como o diagnóstico das cefaléias primárias e secundárias. Método: 3328 pacientes foram analisados re t rospectivamente de acordo com sexo, idade, raça, escolaridade, tempo decorrido entre o início da cefaléia e a busca ao médico e diagnóstico (ICHD-II, 2 0 0 4 ) . Resultados: A razão Mulher/Homem foi 4:1, ambos com média de idade 40,7±15anos, não havendo diferença significativa entre os sexos. Aproximadamente 65% dos pacientes eram brancos e 55% tinha menos de 8 anos de escolaridade. A duração da queixa de cefaléia até a primeira consulta foi de 1 a 5 anos em 32,99% dos pacientes. Os diagnósticos mais prevalentes foram: migrânea (37,98%), cefaléia do tipo tensional-CTT (22,65%) e cefaléia em salvas (2,73%). Conclusão: Existem poucos dados epidemiológicos de pacientes atendidos em serviços terciários, principalmente em países subdesenvolvidos. De acordo com a literatura, a migrânea foi mais prevalente que a CTT. Também é relevante observar a baixa escolaridade da população, assim como o grande tempo de espera até a primeira consulta. Um número incomum de pacientes com síndrome de cefaléia hípnica foi observado na amostra.

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Most patients of our sample presented PPS. In Brazil, PPS frequency and clinical features are quite similar to those of other countries.

OBJECTIVE: To determine the clinical correlates of the restless legs syndrome (RLS) in a Brazilian sleep disorders center. METHODS: We retrospectively studied 118 patients with RLS from January, 2004, to December, 2010. The analyzed variables were: age at disease onset, gender, race, years of school instruction, primary and secondary RLS, and treatment options. RESULTS: Among the studied patients, 83.9% were women with a female/male sex ratio of 5:1. Mean age of the patients at symptom onset ± standard deviation was 41.7±17.9 years-old. The primary RLS was found in 85% of patients. The other 15% remainders consisted of secondary forms, and they were associated with neuropathy, iron deficiency anemia, end-stage renal disease, or Parkinson's disease. Drug therapy for RLS was introduced in 67% of patients. CONCLUSIONS: Most patients presented primary RLS with an early disease onset. Further epidemiological studies are welcomed to provide better information on secondary RLS in Brazil.

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