Many addicted individuals in Petersburg who end up in drug rehab are dual diagnosis clients with co-occurring mental and substance abuse problems. Actually, as many as 1/3 of those who suffer with mental health issues in Petersburg also take part in substance abuse at some time in their lives. These dual diagnosis clients typically turn to alcohol or drugs to self medicate in an attempt to alleviate the symptoms of an underlying psychiatric issue. Some addicted individuals aren't even diagnosed with a psychological condition, and only when they make it to a drug rehabilitation program is this sort of psychological condition discovered. This in itself can sometimes help resolve addiction issues and put the person in a position to get rehabilitation for both conditions so that they have a strong chance of remaining abstinent and mentally healthy in the future.