Many people in Vallejo 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 Vallejo also become involved in substance abuse at some time in their lives. These dual diagnosis clients often turn to drugs or alcohol to self medicate in an attempt to ease the symptoms of an underlying psychological disorder. Some addicted individuals aren't even diagnosed with a psychological condition, and only when they begin to receive treatment at a drug rehabilitation center is this sort of psychological condition uncovered. This in itself can help resolve addiction issues and put the individual in a position to get treatment for both disorders so that they have a good chance of remaining abstinent and psychologically healthy in the future.