Teens diagnosed with schizophrenia experiences LOSS OF GRAY MATTER THAT SPREAD IN WAVES INTO THE EARLY 20S. Schizophrenia is a group of disorders that is characterized by delusions, hallucinations, cognitive impairment, mood disturbance and social withdrawal. Researchers had noticed that there is a distinct process in the manner in which brain development occurs in normal teens and teens with schizophrenia.<span />