Many people in Marengo, Illinois who end up in drug rehab are dual diagnosis clients with co-occurring mental and substance abuse problems. Actually, as many as 1/3 of those who suffer with mental health issues in Marengo, Illinois also become involved in substance abuse at some time in their lives. These dual diagnosis clients frequently turn to drugs or alcohol to self medicate as a way to alleviate the symptoms of an underlying psychiatric issue. Some addicts aren't even diagnosed with a disorder, and only when they begin to receive treatment at a drug rehabilitation program is this sort of issue brought to light. This alone can sometimes help resolve addiction issues and put the individual in a position to get rehabilitation for both disorders so that they have a strong chance of remaining abstinent and psychologically stable in the future.