During pregnancy, many systemic changes may occur, them being haematological, car-diac, renal, respiratory, gastro-intestinal, endocrine or metabolic. Some other modifica-tions may target the cutaneous layers. It seems logical that during pregnancy, hormonal or other less well-explained pathways may influence one or more of the skin cell types. Pigmentary changes, such as melasma, but also vascular or structural modifications may affect the skin of pregnant women. Among the latter, striae distensae are probably the most common. Hair disorders featuring hair loss are frequently of concern during this pe-riod. Endocrine changes will often affect the skin glands, especially sebaceous ones, provoking acne. By contrast, some specific diseases originating in the skin may also oc-cur during the course of the gestation. Most of them present pruritic symptoms and for this reason affect the quality of life of pregnant women. Cutaneous infections such are vari-cella zoster virus, genital warts, infestation by Candida, Lyme disease or scabies may be observed during the period of gestation. Skin is modified during pregnancy and/or postpartum. These changes are usually only physiologi-cal, expressing changes in hormones or other factors secreted though the placenta, ovaries or en-larged pituitary gland. However, various dermatoses may specifically develop during this period and may influence the foetal outcome or, more rarely, the mother’s health. Therefore, being able to di-agnose and manage them is of high importance. Further, the increasing demand about cosmetic procedures, even during pregnancy, makes necessary to adapt our knowledge about their safety during this period.In this review, cutaneous modifications will be classified as physiological changes, spe-cific dermatoses of pregnancy, cutaneous infections that may modify the prognosis of pregnancy, miscellaneous skin diseases that may be affected by pregnancy and finally the safety of cosmetic dermatologic procedures during pregnancy will be overviewed, in order to offer to the dermatologists updated information permitting them to bring accurate assistance to their pregnant patien