Many rehab programs in Normal, Illinois address people 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 address the client's mental disorder(s) during their drug treatment will leave them susceptible to relapse once they leave treatment. Issues with mood disorders, anxiety disorders and other mental disorders (schizophrenia, personality disorders, etc.) will surface once back in their day to day life. If the individual does not have a grip on how to manage their mental disorder they will most likely fall back into their old ways of abusing drugs or alcohol as a means of coping and self-medicating.