Achondroplasia Achondroplasia is a birth defect that prevents a baby's cartilege from turning into bone as it should. Learn how achondroplasia is treated.
Rh disease RH factor is a protein on some people's red blood cells. Learn how RH disease affects your baby and how to prevent it.
Marijuana and pregnancy Using marijuana during pregnancy may cause harm to your baby. Learn about the effects of marijuana and how to seek help to quit.
Syphilis in pregnancy Learn about syphilis and pregnancy, including its effects, symptoms, treatment and how to prevent it.