Sudden gains in the treatment of children and adolescents with prolonged grief.

Objective: Sudden gains describe large and stable reductions in symptoms between two consecutive treatment sessions and have not yet been investigated in prolonged grief disorder (PGD), a new disorder in the 11th edition of the and text revision of the fifth edition of the characterized by separation distress and accompanying symptoms beyond 6 months of bereavement. The study aimed to examine the occurrence of sudden gains and their relation to treatment outcome and content during cognitive behavioral therapy (CBT) and supportive counseling for children and adolescents with PGD symptoms.

Method: We used data from 118 patients (50% female; age: = 12.93, = 2.81) who were randomized to receive either nine individual sessions of CBT or nondirective supportive counseling. Session-by-session PGD symptoms were assessed using the Grief Checklist. We identified sudden gains using the original criteria by Tang and DeRubeis (1999) and compared treatment outcomes between sudden gainers and nonsudden gainers using linear mixed models.

Results: Nine patients (7.63%) experienced a total of 10 sudden gains. Most sudden gains occurred during CBT. We found no differences between sudden gainers and nonsudden gainers regarding PGD symptoms, posttraumatic stress, and depressive symptoms, but problem behaviors declined toward the follow-up assessments in sudden gainers.

Conclusions: Sudden gains seem to be a rare event with limited clinical relevance in the treatment of PGD symptoms in children and adolescents. Results imply future research into predictors of sudden gains and other forms of symptom change during PGD treatment. (PsycInfo Database Record (c) 2025 APA, all rights reserved).