Persons with co-occurring mental and substance abuse disorders must address both issues in order to become fully rehabilitated. Some individuals take drugs to ease symptoms of mental health problems, and some people take drugs which then, in turn, brings about symptoms which mimic mental health issues, such as anxiety and depression. Addiction rehabilitation professionals know how to distinguish between the two, and can work with clients to correctly treat real mental health problems in tandem with any other substance abuse treatment that is done with the individual. This has proven to be effective in keeping people with mental health issues off of drugs and alcohol and mentally stable and healthy.