Many addicted individuals in Castalia, Iowa 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 Castalia, Iowa also become involved in substance abuse at some point 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 psychological issue. Some addicts aren't even diagnosed with a disorder, and only when they make it to a drug treatment program is this sort of psychological condition uncovered. This in itself can sometimes help resolve addiction issues and put the person in a position to receive treatment for both conditions so that they have a good chance of remaining clean and sober and mentally stable in the future.