Also, a baby’s risk for developing a brain abnormality or injury that leads to CP increases when the mother has certain problems during her pregnancy. These problems may include:
Infections, such as rubella, cytomegalovirus infection (CMV), chorioamnionitis, and toxoplasmosis.
Exposure to certain medicines, such as thyroid hormones, estrogen, or methotrexate.
Use of alcohol or illegal drugs.
Other problems, such as bleeding in the uterus during the sixth to ninth month of pregnancy, large amounts of protein in the urine (proteinuria), or high blood sugar levels.