RESUMO
INTRODUCTION: Dermatomyositis is a disorder known as a pathology whose etiology remains unknown. It can occur at any age with clinical symptoms of weakness and wasting, especially of the proximal musculature, due to inflammatory infiltration of muscles and destruction of muscle fibers. It is exceptionally seen during pregnancy, conditioning adverse effects in pregnant women. OBJECTIVE: The principal objective here is the presentation of a clinical case of dermatomyositis during pregnancy. CASE REPORT: Women of 33 years of age with term pregnancy, suffering from dermatomyositis from infancy, with satisfactory evolution. CONCLUSION: Dermitomyositis is a pathology of unknown origin whose incidence averages five cases in one million habitants with exceptional presentation during pregnancy. There are 29 case reports in the world literature. Perinatal morbimortality lies between 46 and 57% in case of activity. Fetal morbidity consists of intrauterine growth restriction prematurely and fetal death. Dermatomyositis has been associated with neoplasm LES and collagen disorders.