Many addicted individuals in Peoria, Illinois who find their way to 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 Peoria also become involved in substance abuse at some time in their lives. These dual diagnosis clients often turn to alcohol or drugs to self medicate as a way to alleviate the symptoms of an underlying psychiatric issue. Some addicted individuals aren't even diagnosed with a psychological condition, and only when they make it to a drug rehabilitation center is this sort of issue discovered. This alone can sometimes help resolve addiction issues and put the person in a position to receive treatment for both disorders so that they have a strong chance of remaining clean and sober and mentally healthy in the future.