Rh disease

Rh disease is a problem that can happen when a pregnant mommy has a different blood type than her unborn baby. Your blood type is like a special code that tells your body how to work properly. Some people have an "Rh factor" in their blood code, which means they have something called "Rh-positive" blood. Other people don't have this Rh factor, which means they have "Rh-negative" blood.

If a mommy has Rh-negative blood and her baby has Rh-positive blood, her body might see her baby's blood as something bad and try to fight it off. This can make the mommy's body make special helpers called "antibodies" to attack her baby's blood. These antibodies can make the baby sick and could even cause the baby to have serious health problems or die.

The good news is, doctors can do some special tests to check if a mommy has Rh-negative blood and if her baby is at risk for Rh disease. If the baby is at risk, there are treatments that can help keep the mommy's body from making those harmful antibodies. This helps to protect the baby's health so they can be born healthy and happy!