Spring PGD versus waiting list control in the treatment of prolonged grief disorder (PGD): protocol for a feasibility randomised controlled trial (RCT)

Background: Prolonged Grief Disorder (PGD) is characterised by persistent longing or preoccupation with a deceased loved one, accompanied by intense emotional pain that lasts six-months or more and significantly impairs functioning. While Cognitive Behavioural Therapy (CBT) with a grief focus is effective, access is limited due to high costs and therapist shortages. Guided digital therapy, which delivers psychological support via an app or website with professional guidance, may offer a scalable solution. Building on the success of a guided digital intervention for post-traumatic stress disorder (PTSD), this study evaluates a similar intervention for PGD in a UK-based randomised controlled trial (RCT).