As with any illness, the frequency, severity, and duration of symptoms of schizophrenia can vary, however, someone with schizophrenia may notice that the incidence of severe psychotic symptoms may diminish as they get older. Conversely, an increase in symptoms can be attributed to not taking prescribed medications as directed, the use of alcohol or illicit drugs, and stressful situations.  The symptoms of schizophrenia fall into three main groups: • Positive – hallucinations, paranoia, exaggerated or false perceptions, beliefs, and behavior. • Negative – characterized by a diminished ability in making plans, speaking, expressing emotion, or finding pleasure. • Disorganized – symptoms that cause confusion, illogical thoughts, disordered speech, and sometimes strange behavior or abnormal movements. Cognitive actions can also be affected and can result in decreased functions in memory, attention, and concentration.