Many addicted individuals in Chillicothe, Illinois who end up in 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 Chillicothe, Illinois also become involved in substance abuse at some time in their lives. These dual diagnosis clients frequently turn to alcohol or drugs to self medicate in an attempt to ease the symptoms of an underlying psychiatric disorder. Some addicts aren't even diagnosed with a disorder, and only when they make it to a drug treatment center is this sort of psychological condition discovered. This alone can sometimes help resolve addiction issues and put the individual 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.