Mothers Against Mental Illness Stigma Posted over 1 year ago Half of teens with mental illness don't get treatment. It gets worse at age 18. How do we identify & treat teens with mental Illness? Educating parents and substance abuse counselors on the subtle signs of mental illness and the importance of early treatment are so important. For us, we thought the paranoia, weird behaviors, inability to focus in school, etc. were just weird teenage behavior. And the substance abuse counselors who should have intervened and gotten him the help he needed failed us.I wish we had known then what we known now.