International Society for the Study of Trauma and Dissociation

The International Society for the Study of Trauma and Dissociation (ISSTD) is a nonprofit professional organization of health professionals and individuals who are interested in advancing the scientific and societal understandings of trauma-based disorders, including posttraumatic stress disorder, complex posttraumatic stress disorder, and the dissociative disorders.

In the 1980s and 1990s, the ISSTD was a modern forum to discuss the controversies surrounding repressed memory and the possible connections between child abuse,traumatic events, memory and dissociation. Editors of the book Dissociation and the dissociative disorders: DSM-V and beyond describe the ISSTD as "The principle professional organization devoted to dissociation".

The ISSTD has published guidelines for the treatment of dissociative identity disorder in both adults and children through its peer-reviewed Journal of Trauma & Dissociation (formerly Dissociation: Progress in the Dissociative Disorders), published five times per year. These guidelines are often referenced in the field as a basic starting point for psychotherapy with highly dissociative clients.

The ISSMP&D's official journal, Dissociation: Progress in the Dissociative Disorders ceased operation after 39 issues (March 1988-December 1997), though its full-text contents have since been made available online.

On April 2, 2016 an activist sub-group of The Satanic Temple called Grey Faction hosted a protest outside of the ISSTD annual conference in San Francisco, CA, to "draw attention to the practices endorsed by the ISSTD, the conspiracism rampant within their membership, and the organization’s role in the death of Jude Mirra."

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