Ultrasound is used to diagnose fetal fifth disease.

I believe that fetal tissue should not be used to treat disease because it can actually cause other disease by treating it for disease its impact is dangerous for the human cells.

Fetal anemia caused by fifth disease may resolve on its own. If the fetus is at risk for heart failure, a fetal blood transfusion may be performed. The mother also may receive medication that passes through the placenta to the fetus.

Fetal alcohol syndrome is caused by the mother being an alcoholic and drinking while she is pregnant. It is not a disease that can be passed on to anyone.

no fetal alcohol syndrome is a disease in which a mother to be abuses alcohol which usually and most often results in various deformations of the fetus/infant.