Mystery Diagnosis: What's Wrong With Carter?

Friendly and playful, Carter Hearn from Lufkin, Texas, may act like a regular, happy-go-lucky little boy, but he suffers from a rare condition that sets him apart from other children. At just four years old, Carter stands at nearly four feet tall and weighs 90 pounds, just a couple inches shorter, but nearly twice as heavy, as his six-year-old sister, Kaylie. His mother, Deena Hearn, said she first noticed her son's abnormal growth when he weighed almost 30 pounds as an infant. "I had Kaylie's...Full Story