Many treatment programs in Stanford, Illinois address persons with co-occurring mental and substance abuse disorders. A client who struggles with a mental disorder(s) and substance abuse needs to work through both issues concurrently. Failing to tackle the client's psychological disorder(s) during their drug treatment will leave them susceptible to relapse once they leave treatment. Issues 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 client does not have a handle on how to handle 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.