An itching, autoimmune, bullous skin disease that occurs during the last two trimesters of pregnancy and puerperium. it also affects non-pregnant females with tissue of placenta origin, such as choriocarcinoma; or hydatidiform mole. it exhibits antigenic and clinical similarity to bullous pemphigoid (pemphigoid, bullous). this disease does not involve herpes viruses (old name, herpes gestationis).