[Electroretinography by reversal pattern in patients with migraine without aura]. / Eletrorretinografia por padrão reverso em pacientes com enxaqueca sem aura.

Seventeen patients with migraine without aura were investigated: the age was between 16 and 39 years, 6 were men and 11 women. The diagnosis of migraine was made according to the classification proposed by the International Headache Society. The method of electroretinogram was performed with pattern reversal (PERG), with monocular stimulation. The stimulation was performed with pattern reversal with 4 x 4 cm black and white squared screen placed one meter from nasion at stimulus frequency 1/s; 512 individual trials were analysed. The PERG did not show a significant increase in the value of the P50 and N95 latency in our cases. Specifically in one of our cases no wave was detected in the left eye.

Sexual behaviour in the city of Lisbon.

This study of sexual behaviour in the city of Lisbon is based on data obtained from 2 random samples, one of individuals aged 16-20 (n = 400) and another of individuals over the age of 20 (n = 400). Samples have been stratified by district, gender and age. Data were obtained by personal interview and by questionnaires completed confidentially by the interviewees. The data include the age of first sexual intercourse, the number of sexual partners, the prevalence of casual relations and the type of sexual practices according to sex and age group. Results show that despite the high risk of exposure to HIV in a significant percentage of the population, AIDS is seen as a personal threat by only 20% of the population. Six per cent of the adults (aged 21 and over) and 12% of the young people (16-20) replied that they had not yet considered the problem; 73.5% of the adults and 67.4% of the young people stated that they did not feel threatened by the disease. Data suggest that the differences between men and women have decreased. Among the sexually active population, only 12% of individuals under 21 and 8% of the adults use condoms regularly. The awareness of infidelity among couples is much lower than in reality.(ABSTRACT TRUNCATED AT 250 WORDS)

Pattern reversal visual evoked potentials in migraine subjects without aura.

Twenty seven patients with migraine without aura were investigated. The age was between 12 and 54 years; 5 were men and 22 women. The diagnosis of migraine was made according to the classification proposed by the International Headache Society. The method of visual evoked potential was performed with pattern reversal (VEP-PR), with monocular stimulation. The stimulation was performed with pattern reversal with 4x4 cm black and white and red and green squared screen placed 1 meter from the nasion at stimulus frequency 1/s; 128 individual trials were analysed. The VEP-PR with black/white and red/green study showed a significant increase of value of the P-100 latency in 10 migraine patients. In 8 cases the LP100 in VEP-PR black/white was normal but in VEP-PR red/green the LP100 showed increase. Specifically in 1 of our cases, LP100 were normal in VEP-PR black/white but in the red/green there were no reproductive waves. On basis of these observations we consider that the method of VEP-PR is an useful instrument for investigation of migraine patients without aura.

South American blastomycosis: ophthalmic and oculomotor nerve lesions.

A case of South American blastomycosis began with an oropharyngeal lesion which was followed by a granulomatous uveitis. The patient was treated with Amphotericin B and showed a clinical regression. Four months later, he developed a right 3rd cranial nerve palsy, aggravating the clinical aspect with a severe generalized involvement of the central nervous system and death. Necropsy showed blastomycotic meningoencephalitis.