A nationwide population-based study of tension-type headache in Brazil.

OBJECTIVES: To estimate the 1-year prevalence of tension-type headache (TTH) and the degree of the association of TTH with some sociodemographic characteristics of a representative sample of the adult population of Brazil. METHODS: This was an observational, cross-sectional, population-based study. We conducted telephone interviews on 3848 people, aged 18-79 years, randomly selected from the 27 states of Brazil. Trained lay interviewers administered the structured questionnaire. It included questions about the sociodemographic characteristics of the population, as well as questions about headache. The degree of the association was calculated through prevalence ratios, adjusted with Poisson regression by gender, age, years of education, marital status, household income, job status, body mass index (BMI), and physical exercise. RESULTS: The estimated 1-year gender- and-age-adjusted prevalence of TTH was 13.0% (95% CI: 11.8-14.2%); 15.4% in males and 9.5% in females. The prevalence of probable TTH was 22.6% (95% CI: 21.1-24.1%). Most (86.2%) subjects reported episodic TTH; 6.4% had chronic TTH. The prevalence was higher at 18-29 years of age (16.2%). TTH was 1.6 times more prevalent in men, and 1.54 times more in subjects with more than 11 years of education. There was no significant association of TTH with marital or job status, household income, BMI, and physical activity. CONCLUSION: This is the first nationwide epidemiological study of TTH in Brazil. The overall prevalence of TTH in Brazil is low, at 13%. TTH is significantly more prevalent in males and subjects with higher education level.

Zumbido pulsátil: tratamento com clonazepan e propranolol / Pulsatile tinnitus: treatment with clonazepam and propranolol

O zumbido pulsátil sincrônico com os batimentos cardíacos é pouco freqüente, sendo de etiologia tanto vascular arterial (malformacões, fístulas artério-venosas) ou venosa (anormalidades do bulbo jugular, tumor glômico jugular ou timpânico). A identificacão precoce da etiologia é essencial para que a terapêutica adequada possa ser instituída. A angioressonância possibilita a identificacão de alteracões vasculares com maior precisão. Relatamos um caso onde, após o diagnóstico de uma alteracão vascular arterial, foi instituído o tratamento com propranolol e clonazepam, com melhora da sintomatologia.

Pulsatile tinnitus: treatment with clonazepam and propranolol.

Pulsatile tinnitus synchronous with heartbeat is rare and normally has vascular origin: arterial (malformation, arterial anatomical variation) or venous (aberrant jugular bulb, glomus tumors, tympanic glomus tumor). Early etiology identification is essential for appropriate treatment to be established. Magnetic angioresonance makes the vascular identification possible and precise. We report a case of arterial anatomical variation in which the treatment was propranolol and clonazepam, showing tinnitus improvement.

O potencial evocado visual padrão reverso na cefaléia em salvas / Pattern reversal visual evoked potentials in cluster headache

Foram submetidos ao potencial evocado visual padrão reverso (PEV-PR), nove pacientes com o diagnóstico de cefaléia em salvas na forma episódica, pelos critérios estabelecidos pela Sociedade Internacional de Cefaléia. A freqüência foi de 1 estímulo por segundo e o total somado foi de 100. Em todos os nossos casos as latências da onda P100 estavam dentro dos limites normais. Não foi levada em consideração as amplitudes, pelo fato de nestas, haver grande variação em indivíduos normais

O potencial evocado visual padrao reverso na cefaleia em salvas

Foram submetidas ao potencial evocado visual padrao reverso (PEV-PR) nove pacientes com o diagnostico de cefaleia em salvas na forma episodica, pelos criterios estabelecidos pela Sociedade Internacional de Cefaleia. A fraquencia foi de 1 estimulo por segundo e o total somado foi de 100. Em todos os nossos casos as latencias da onda P100 estavam dentro dos limites normais. Nao foi levada em consideracao as amplitudes, pelo fato de nestas, haver grande variacao em individuos normais.