[A case of bullous dermatosis at the end of pregnancy transmitted to the newborn: herpes gestationis].

The authors report a case of bullous dermatosis developing at 38 weeks of amenorrhoea in a para II. The newborn infant developed a skin rash 3 days after birth. Direct immunofluorescent study of skin biopsies showed the presence of a very small amount of IgG and a very large amount of complement fixed to the basal membrane. Tests for the presence of Herpes gestationis factor in maternal and child blood by immunofluorescence to anti-complement were negative. Tests for anti-epidermal antibodies by indirect immunofluorescence in the serum were also negative, for both anti-basal membrane antibodies as well as anti-intercellular substance antibodies.