Toddler diagnosed with Phelan-McDermid Syndrome

Soft babbling noises can be heard as two-and-a-half-year-old Riley Peyton Bailey plays with her daddy.

She's bubbly, she is adorable and at first glance or even the first several moments, it is not obvious why Riley has recently been diagnosed with an extremely rare syndrome.

In August of this year Riley's parents Christy and Jerry Coleman were told she has Phelan-McDermid Syndrome, a disorder with only 600 cases worldwide.