20-year-old Brooke Greenberg looks more like a toddler, because of a medical condition.
The Daily Mail reports the woman has never been given a formal diagnosis, leading doctors to term her condition Syndrome X.
The Maryland woman has remained physically and cognitively similar to a toddler, with an estimated mental age of nine months to one year. She is unable to talk and still has her baby teeth.
There is a community Facebook page for her.
*Click here to read more about Brooke.