When a forty-three-year-old medical doctor sought treatment for chronic alcoholism, author Dr. Michael Mullan determined that George J. also suffered from depression and would require an integrative treatment approach to ensure a successful outcome.

In Integrative Dual Diagnosis Treatment Approach to an Individual with Alcoholism and Coexisting Endogenous Depression, Mullan:

- Describes the details of the case
- Reviews the literature related to the clinical problems of dealing with alcoholism and alcoholism with co-existing mental illness
- Includes an overview of the dually diagnosed population
- Presents the model of treatment for the dually disordered--Dual Diagnosis Model
- Reviews the patient's treatment regimen
- Provides a summary of the treatment and experience
- Reports on the patient's results

In this study, Mullan describes his Dual Diagnosis Model approach for the treatment of addiction with co-existing mental disorders. He contends that in order to be successful treating an individual's addiction that the underlying psychological disorders must also be addressed to ensure a positive outcome.