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Variation among existing studies in labeling, defining, identifying, and subtyping cases of suspected drug-facilitated sexual assault (DFSA) poses challenges to integrating research findings for public health purposes. This descriptive study addressed methodological issues of nomenclature and DFSA operational definitions to improve case identification and was designed to distinguish assault subtypes. We studied a 2-year ethnically diverse cohort of 390 patients who presented acutely to an urban rape treatment center (RTC). We abstracted data from RTC medical and mental health records via chart review. Assault incidence rates; engagement into medical, forensic, and mental health services; injury sustained; and weapon use were calculated separately for assault subtypes and compared. DFSA accounted for over half of the total sexual assault (SA) cases. Involuntary DFSA (in which an incapacitating substance was administered to victims without their knowledge or against their will) increased from 25% to 33% of cases over the 2-year period. DFSA victims presented sooner, and more often attended medical follow-up and psychotherapy than non-DFSA victims. Incidence rates indicated increasing risk for young males. These findings indicate that DFSA continues to be a growing and complex phenomenon and suggest that DFSA victims have greater service needs. The field would benefit from innovations to address symptomatology arising from this novel type of trauma and the unique risks and needs of male victims, as well as underscoring the ongoing need for DFSA-specific prevention efforts for both victims and perpetrators.

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Background Sexual assault (SA) is a highly prevalent global public health problem and a robust predictor of posttraumatic stress disorder (PTSD), substance use disorder (SUD), and suicidality. A large percentage are drug or alcohol facilitated (DFSA), impairing trauma memory and affecting the application of evidence-based treatments. Despite these problems, few have investigated DFSA-specific mental health (MH) needs. Objective Goals of this study were (1) to identify psychological sequelae characterizing DFSA towards explaining why symptoms have been treatment-refractory, comparing survivors with involuntary substance ingestion (forced, covert: DFSA-I), voluntary ingestion (DFSA-V), and non-DFSA; and (2) to determine how impaired trauma memory relates to the development of PTSD and depression symptoms. Method Data from a retrospective chart review of 74 adults receiving SA MH services at an outpatient trauma center are presented. The sample includes a 2-year cohort seen acutely at an urban rape treatment center. The study is one of the first to examine therapy records beyond case studies for DFSA. Logistic, Poisson, and negative binomial regression analyses of quantitative data and qualitative thematic analysis of trauma cognitions and treatment foci were conducted. Results DFSA-V had five times greater odds of SUD, and notable substance-related self-blame compared to DFSA-I. DFSA-I had prominent relationship distress and self-blame for missing danger of perpetrator drugging. Survivors with impaired trauma memory had significantly fewer hyper-arousal and overall PTSD symptoms, and specifically less hypervigilance. No differences were found in re-experiencing symptoms. Conclusion Impaired trauma memory is common in DFSA and is associated with fewer baseline hyper-arousal and overall PTS. Despite this, DFSA issues including re-experiencing symptoms that are particularly distressing without the ability to cognitively connect the intrusions contribute to increased treatment needs. Impaired memory limits the application of evidence-based treatments, and collectively these findings call for the development of trauma-specific treatment protocols to enhance recovery for DFSA survivors. HIGHLIGHTS Survivors of drug-facilitated sexual assault have prominent PTSD including reexperiencing, though trauma memory may not be encoded. • Those absent trauma memory have less hyperarousal, but DFSA complications explain why it is treatment refractory and inform treatment development.