Many addicted individuals in Arlington Heights, 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 Arlington Heights 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 relieve the symptoms of an underlying psychological condition. Some treatment clients aren't even diagnosed with a disorder, and only when they make it to a drug treatment program is this sort of issue brought to light. This in itself can 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 abstinent and mentally healthy in the future.