Many individuals in Nauvoo, Illinois who find their way to 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 Nauvoo also become involved in substance abuse at some point in their lives. These dual diagnosis clients frequently turn to drugs or alcohol to self medicate in an attempt to ease the symptoms of an underlying psychiatric disorder. Some treatment clients aren't even diagnosed with a psychological condition, and only when they make it to a drug rehabilitation center is this sort of psychological condition brought to light. This alone can help resolve addiction issues and put the person in a position to receive treatment for both conditions so that they have a good chance of remaining abstinent and psychologically stable in the future.