The author presents 83 cases of «a frigore» peripheral facial palsy, occurred in the mountain city of Petrópolis 'which has characteristics such as a tropical climate without any traces of a dry season and an average temperature of 50º F to 73.5º F. The author relates them with virus infections which appear within a year period. Fifty six patients belong to his clinic and have a follow up, while other 25 patients proceed from another clinics and from them he only has reports on sex, age, side of palsy and the beginning of illness. He shows that the largest number of cases occurred along the monthhs of May, August, September and October. Season distribution for southern hemisphere is analysed. He also considers etiology, incidence, prevalence, treatment and results on patients studied.
Facial nerve; idiopathic «a frigore» palsy; Bell's palsy