Pemphigus vulgaris and pregnancy.

Pemphigus vulgaris (PV), an autoimmune bullous dermatosis, is rarely encountered in pregnancy. Two women with PV and their three pregnancies are described. Pregnancy outcome was generally good, although one of the neonates had characteristic PV skin lesions that resolved spontaneously. The pathophysiology, clinical manifestations, and special issues of PV pertaining to pregnancy are discussed. With our cases added, there are now 23 reports in the English literature on PV in pregnancy. From these data it seems that transient skin lesions may occasionally appear in the neonate regardless of the severity of maternal disease. Such lesions are due to passive transplacental transfer of PV antibodies and do not have long-lasting clinical implication. On the other hand, and contrary to past traditional thinking, PV may be associated with poor neonatal outcome including prematurity and fetal death. Such complications seem to be restricted to pregnancies with clinically severe PV.