Many people in Belleville, Illinois who find their way to drug rehab are dual diagnosis clients with co-occurring mental and substance abuse problems. Surprisingly, as many as 1/3 of those who struggle with mental health issues in Belleville, Illinois also become involved in substance abuse at some point in their lives. These dual diagnosis clients typically turn to drugs or alcohol to self medicate in an attempt to relieve the symptoms of an underlying psychiatric disorder. Some treatment clients aren't even diagnosed with a psychological condition, and only when they begin to receive treatment at a drug rehabilitation center is this sort of psychological condition brought to light. This in itself can sometimes help resolve addiction issues and put the individual in a position to get treatment for both disorders so that they have a good chance of remaining clean and sober and mentally stable in the future.