Persons with co-occurring mental and substance abuse disorders must address both issues if there is any hope for them to become fully rehabilitated. Some individuals take drugs or alcohol to ease symptoms of mental health problems, and some people take drugs which then, in turn, causes symptoms which mimic mental health issues, such as depression and anxiety. Drug 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 individuals with mental health disorders off of drugs and alcohol and mentally stable and happy.