It's a chromosome abnormality that is incompatible with life. There are some children that survive to be born but they have learning disabilities, developmental delays, deformities, etc. My first daughter died at 32 weeks gestation in 2013 from this, but we didn't find out what happened til she'd already passed.
A first trimester screening that includes a blood test and ultrasound offers early information about a baby's risk of having it. A second trimester blood test called a quad screen can also detect it.
Symptoms include low birth weight, small abnormally shaped head, and birth defects in organs that are often life threatening.
Edwards syndrome has no treatment and is usually fatal before birth or within the first year of life.