The girl's mother, Tammy Mize, of Easley, South Carolina, said: "When I picked Carly up, the doll was attached to the back of her head."
The Cabbage Patch Snack Time Kid doll, which is supposed to "eat" plastic chips and other fake food, has no on-off switch, and Mrs Mize said she tried to prise the doll off Carly's head with no success.
"It kept rolling her hair inside the head," she said. "It pulled her hair from the root. She is completely bald all the way down the back of her head."
In another incident, a doll belonging to seven-year-old Sarah Stevens, of Griffith, Indiana, had to be taken apart when it chewed its way up her hair to her scalp. Sarah's aunt, Kelly Nagy, took 30 minutes to free the little girl's hair.