Many addicted individuals in Rock Island, 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 Rock Island also become involved in substance abuse at some time in their lives. These dual diagnosis clients often turn to drugs or alcohol to self medicate as a way to ease the symptoms of an underlying psychological disorder. Some treatment clients aren't even diagnosed with a disorder, and only when they begin to receive treatment at a drug treatment center is this sort of psychological condition uncovered. This in itself can sometimes help resolve addiction issues and put the individual in a position to get rehabilitation for both conditions so that they have a good chance of remaining clean and sober and psychologically healthy in the future.