Recurrent Type B Pigmentary Demarcation Lines in Pregnancy: A Case Report = Recurrent Type B Pigmentary Demarcation Lines in Pregnancy: A Case Report

다국어 초록 (Multilingual Abstract)

Pigmentary demarcation lines (PDLs) are rare pigmentary diseases with abrupt transition lines between areas of deeper pigmentation and areas of lighter or normal pigmentation. Among several types, type B PDL involves the posterior medial part of the lower extremities and is commonly associated with pregnancy. In South Korea, only a few cases of type B PDL during pregnancy is reported; however, here we present a case of recurrent type B PDL during pregnancy. The patient experienced 2 pregnancies with pigmentary changes in the posterior thigh from the late second trimester; the pigmentation faded and disappeared a few months after delivery in both pregnancies. Most PDLs are asymptomatic and are spontaneously relieved. It will be helpful for obstetricians to recognize this condition and reassure patients.