I am the step-father of an 8 year old boy. This year his biological father was diagnosed and institutionalized with schizophrenia. I was wondering what are the odds my stepson will develop the disorder? He currently seems to suffer from a very strong case of ADHD (the slow release medication seems to have no effect, only the old generic 4-hour doses seem to work). Also, upon speaking to his grandmother, she suspects his grandfather may have had the same condition as well, although never formally diagnosed. She said he was very suspicious, and forced her to listen to rambling speeches that would often go on for an hour or more.
At this point I am very worried about the future of my stepson. Is there a genetic component to this disease and is there a history of comorbidity with ADHD?