Many people in Middlebranch who end up in 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 Middlebranch also become involved in substance abuse at some point in their lives. These dual diagnosis clients typically turn to drugs or alcohol to self medicate as a way to relieve the symptoms of an underlying psychological disorder. Some addicts aren't even diagnosed with a psychological condition, and only when they make it to a drug rehab facility is this sort of psychological condition uncovered. 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 good chance of remaining abstinent and mentally stable in the future.