A troubling trend on the rise in the U-S.

New studies by the America Academy of Pediatrics reveal children with A-D-H-D are at a high risk of developing a substance abuse disorder.

Miami Children's Hospital Pedatrician Dr. Sara Conil says a lot of times the meds kids are prescribed with have few clinical guidelines.

The study says about a quarter of school aged children are approached to sell, buy, or trade their meds.

A-D-H-D affects about 8-percent of children and adolescents.

(Photo: Brendan Smialowski / 2003 Getty Images)