I just read this one this morning which is mostly about the consequences of heroin overdose and the effects on both the boy and his mother. Buried in the middle however was this description which I imagine could apply to many of the kids talked about on this board.

"But the promise of his young life — he excelled at math and loved to play guitar — appears dashed. He once dreamed of playing in a band; he now dreams of being able to walk.

Alex had learned his multiplication tables when he was three and scored 700 on his math SATs. Today he can hardly add, though he occasionally recalls his calculus and watches television programs on topics like string theory."

http://www.nytimes.com/2014/08/11/us/a-mother-lifts-her-son-slowly-from-heroins-abyss.html?_r=0