Newsweek spoke to mother Allyson Moulton, 37, who described her teenage daughter's medical condition as a "ticking bomb." ...

Budd-Chiari syndrome (BCS) is a group of rare conditions in which veins in the liver become blocked. An ultrasound for BCS may show atypical, narrowed, or potentially blocked veins inside the liver.

Groeller, 17, and her mother, Allyson Moulton, 37, from Atlanta, spoke to Newsweek about the life-altering diagnosis of Chiari malformation ... diagnosed with Ehlers-Danlos syndrome (EDS ...