Persons with co-occurring mental and substance abuse disorders must handle both issues in order to recover completely. Some people take drugs to alleviate symptoms of mental health problems, and some people take drugs which then, in turn, causes symptoms which are identical to mental health problems, such as depression and anxiety. Addiction treatment professionals know how to distinguish between the two, and can work with clients to appropriately treat real mental health problems in tandem with any other substance abuse treatment that is done with the person. This has proven to be effective in keeping people with mental health issues off of drugs and mentally stable and happy.