Many treatment programs in Teutopolis, Illinois address persons with co-occurring mental and substance abuse disorders. A client who struggles with a psychological disorder(s) and substance abuse requires to work through both issues simultaneously. Failing to tackle the client's psychological disorder(s) during their drug rehabilitation will leave them susceptible to relapse once they leave treatment. Difficulties with mood disorders, anxiety disorders and other psychiatric disorders (schizophrenia, personality disorders, etc.) will come up once back in their day to day life. If the individual does not have a grip on how to deal with their mental disorder they will probably fall back into their old ways of abusing drugs or alcohol as a means of coping and self-medicating.