Pregnancy starts with the fetilized egg cell being implanted in the uterus endometrium. It lasts for ten lunar months or 280 days. During pregnancy, many changes take place in the organism, both biological and pathological. The main reason these changes take place is the fluctuation of gestational hormones. Gingivitis with a prevalence of 35 to 100% can be found in the oral cavity of a pregnant woman. Alongside a generalized infection, the instance of a more serious infection of the mucous membrane epulis gravidarum is possible. It is important to hinder the development of gingivitis at an early stage so that the disease does not progress, resulting in a loss of both bones and, later, teeth. Prevention in the form of oral hygene is important because it can stop a disease from developing. From a dermatological point of view, during pregnancy we can see many changes on the skin, both physiological and pathological. Some of the physiological changes are stretch marks, pigmentation, pruritus, hemangioma, varicose veins... Pathological changes on the skin that appear during pregnancy can be divided into specific and non-specific. Basic gestational dermatoses are herpes gestationis, pruritus gravidarum, impetigo herpetiformis, pruritic urticarial papules and plaques, and atopic eruptiopns in pregnancy. The main characteristic of these dermatoses are polymorphic efflorescences and itchiness, sometimes accompanied by other general symptoms. It is important to start treating such conditions as soon as possible because some of the dermatoses can lead to premature labour and birth, low body weight or even result in fetal death. The condition is usually treated locally, mostly with corticosteroids and antipruritics. A systematic intake of drugs is used only in severe cases.