Many people in Oak Park, Illinois who end up in drug rehab are dual diagnosis clients with co-occurring mental and substance abuse problems. In fact, as many as 1/3 of those who suffer with mental health issues in Oak Park, IL. also become involved in substance abuse at some point in their lives. These dual diagnosis clients frequently turn to alcohol or drugs to self medicate in an attempt to relieve the symptoms of an underlying psychological condition. Some treatment clients aren't even diagnosed with a disorder, and only when they begin to receive treatment at a drug rehab center is this sort of psychological condition uncovered. This in itself can help resolve addiction issues and put the individual in a position to receive treatment for both disorders so that they have a good chance of remaining abstinent and mentally stable in the future.