Many individuals in Andalusia, 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 suffer with mental health issues in Andalusia, Illinois also become involved in substance abuse at some time in their lives. These dual diagnosis clients typically turn to alcohol or drugs to self medicate as a way to relieve the symptoms of an underlying psychiatric condition. Some addicted individuals aren't even diagnosed with a psychological condition, and only when they begin to receive treatment at a drug rehab center is this sort of psychological condition discovered. This alone can sometimes help resolve addiction issues and put the person in a position to get treatment for both disorders so that they have a strong chance of remaining abstinent and mentally stable in the future.