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93 active trials for Posttraumatic Stress Disorder

Couple HOPES (Helping Overcome PTSD and Enhance Satisfaction)

Posttraumatic Stress Disorder (PTSD) will be a severe problem in Canada in the wake of COVID-19, especially for Military Members, Veterans, First Responders, and Healthcare Workers (MVFH). However, gold standard face-to-face PTSD treatments do not meet current MVFH needs, which requires virtual interventions and minimal healthcare resources. Recognizing the need for a virtual, low-resource PTSD intervention for MVFH with PTSD and their loved ones, the investigators developed Couple HOPES (Helping Overcome PTSD and Enhance Satisfaction). Couple HOPES is a secure, online self-help intervention for those with PTSD and their partners (www.couplehopes.com). However, MVFH are now particularly likely to be exposed to traumas related to COVID-19. It is essential to identify if Couple HOPES is safe and helpful for couples involving MVFH with COVID-19-related PTSD specifically. This project will therefore test the efficacy of Couple HOPES compared to a delayed waitlist control in 70 couples wherein one member is a MVFH with COVID-19-related PTSD. The investigators will examine if Couple HOPES is helpful in improving PTSD symptoms and relationship satisfaction for such couples, and if it is more or less helpful to this end for these couples compared to those with other forms of trauma exposure. 70 couples including a MVFH with COVID-19-related PTSD, will be randomly assigned to receive Couple HOPES or to a waitlist. PTSD symptoms and relationship satisfaction will be measured ~weekly during the intervention and one month after it. Related problems (e.g., depression, anxiety, healthcare use) will be measured before, in the middle of, after, and one month after, the intervention.

Start: January 2021
Reducing Cannabis Overuse With Prazosin

Cannabis use disorder (CUD) is a significant and expanding health problem, and no FDA approved treatments are currently available. Persons with posttraumatic stress disorder (PTSD) may use cannabis to help control symptoms. Relief from PTSD insomnia, nightmares, anxiety, and preoccupying thoughts have been reported as troublesome symptoms targeted by cannabis users. Risks from cannabis use by individuals with PTSD have been reported. Chronic use of cannabis can lead to tolerance, requiring increased use for symptom relief, and withdrawal symptoms upon stopping. CUD is more frequent and severe in those with PTSD than those without. Many symptoms of cannabis withdrawal overlap with troubling symptoms of PTSD and thus may be interpreted as a relapse of PTSD symptoms. Those attempting to reduce or stop cannabis use may experience cannabis withdrawal symptoms including insomnia and distressing dreams, anxiety, irritability, and/or excessive sweating that they may misattribute to re-emerging or untreated PTSD symptoms. Excessive brain adrenaline activity is arguably the best-described neurobiological contribution to the pathophysiology of PTSD. Prazosin, a drug that blocks the negative effects of brain adrenaline, has demonstrated effectiveness in robustly reducing PTSD-related nightmares and sleep disturbance in active duty Servicemembers and recently discharged combat Veterans in most, but not all, clinical trials, as well as in civilians with non-combat trauma. Clinically, the investigators have observed that several patients with PTSD using cannabis to treat insomnia and/or trauma-related nightmares and wanting to reduce their cannabis use were able to achieve reduction or cessation of cannabis use once they were treated with an effective dose of prazosin. Therefore, we have wondered if prazosin may provide sufficient treatment of PTSD symptoms otherwise targeted by cannabis, supporting those individuals' efforts to reduce cannabis use. This open-label pilot study aims to study the feasibility of prazosin as a treatment for CUD in individuals with or without comorbid PTSD, and to evaluate if additional research on a larger scale is warranted.

Start: November 2020