The use of progesterone should be discontinued to avoid triggering physical abnormalities affecting the normal growth of the fetus. Taking progesterone body localized itching is common in allergic reactions, the human body in the intake of progesterone, the immune system overreaction, the local skin will produce aseptic inflammation, which will lead to skin rashes, causing localized itching. Although the allergic reaction is not serious, but also should stop using progesterone immediately, otherwise the itching will affect the pregnant woman’s sleep, cause anxiety or restlessness, is not conducive to the normal progress of pregnancy, may have a serious adverse effect on the development of the fetus. Therefore, you should go to the hospital as soon as possible to change the medication needed to protect the fetus, in order to reduce the harm to the human body. Progesterone belongs to a kind of hormone drugs, mainly used to protect the fetus, the appropriate use of some during pregnancy is not only conducive to the growth of the fetus, but also reduce the incidence of miscarriage, but in the use of the drug must pay attention to observe the individual’s physical condition, to determine whether the drug is allergic to. The use of progesterone in the clinic should be carried out under the guidance of a doctor, do not take on your own.