Many individuals in Coal City, 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 struggle with mental health issues in Coal City, Illinois 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 as a way to ease the symptoms of an underlying psychological disorder. Some treatment clients aren't even diagnosed with a psychological condition, and only when they begin to receive treatment at a drug treatment center is this sort of psychological condition brought to light. This in itself can sometimes help resolve addiction issues and put the person in a position to get rehabilitation for both conditions so that they have a good chance of remaining abstinent and psychologically healthy in the future.