question: hi my name is Ashish and I am a student.I having some problem in my head. my mind is always go out of world thinking useless.I can't stop even if i want due to over thinking my head from back start paining.This always happen when I am not doing anything or when I am studying.If this is a kind of any disoder or dieases then let me know.I forgot to tell u that sometimes thingking in nights do not give me good sleep