Marfan syndrome Marfan syndrome is a birth defect that affects the body's connective tissue. Learn the signs and symptoms of Marfan syndrome and how it's treated.
Pregnancy after age 35 If you get pregnant after 35, you may need prenatal tests to check for birth defects. Learn about pregnancy after 35.
Isotretinoin and other retinoids during pregnancy If you're pregnant, oral retinoids may increase your baby's risk for birth defects. Learn how to protect your baby from the effects of isotretinoin.