Many people in Sunnyvale 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 Sunnyvale, California 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 ease the symptoms of an underlying psychiatric disorder. Some treatment clients aren't even diagnosed with a psychological condition, and only when they make it to a drug rehabilitation program is this sort of issue discovered. This in itself can sometimes help resolve addiction issues and put the individual in a position to get treatment for both conditions so that they have a good chance of remaining clean and sober and mentally stable in the future.