Many addicted individuals in Oakbrook Terrace, 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 Oakbrook Terrace also take part in substance abuse at some time in their lives. These dual diagnosis clients typically 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 rehab program is this sort of psychological condition uncovered. This alone can help resolve addiction issues and put the individual in a position to get rehabilitation for both conditions so that they have a strong chance of remaining abstinent and mentally stable in the future.