During pregnancy immunological, metabolic, hormonal and vascular changes occur, and can cause specific skin diseases. The specific dermatoses of pregnancy have undergone numerous changes in nomenclature and classification, partly due to advances in the knowledge of the pathogenesis of these skin diseases. Currently the following diseases are considered specific dermatoses of pregnancy: pemphigoid gestations, polymorphic eruption of pregnancy, intrahepatic cholestasis of pregnancy and atopic eruption of pregnancy. Timely diagnosis and specific and safe treatment are essential to prevent complications which, although rare, may be associated with significant maternal-fetal comorbidity.