The Clinical Guide for Integrated Dual Disorder Treatment (IDDT) is a 56-page booklet that provides an introduction to the clinical practices of this evidence-based practice. IDDT is designed for people who have been diagnosed with serious mental illness and co-occurring substance use disorders. We created this booklet as a way to inform, to educate, and to advocate for integrated treatment.

This booklet gives you a basic introduction to the treatment of co-occurring disorders and the role of multidisciplinary IDDT service teams. It also gives you tips for your practice that you can use today. It is designed to get you started—to prepare you for training, consultation, and discussions with colleagues. Topics explored in this booklet include the following:
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This booklet features an 8-page document that contains a Stage-Wise Treatment Table on three panels, which is designed as an at-a-glance overview of clinical philosophies and practices of IDDT.
This is an ideal tool for educating, training, and building
consensus for integrated treatment among multiple audiences within your
organization and throughout your community.
The Stage-Wise Treatment Table is designed to be used with the Clinical Guide booklet and as a separate clinical tool for service teams. In fact, this document is actually the cover of the booklet, but we have printed it separately to provide you with a lightweight resource. Order some copies for your team members. Also use it to inform, educate, and build consensus among collaborators and stakeholders.
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Integrated Dual Disorder Treatment (IDDT) was created by researchers at the Dartmouth Psychiatric Research Center. It is an evidence-based practice that is endorsed by the U.S. Substance Abuse and Mental Health Services Administration (SAMHSA).