Most reactions to grief are adaptive. However, there is the possibility that some individuals present a complicated grief disorder, where there is a pathological intensification of symptoms lasting more than 6 months, deserving special treatment.

Evaluate the effectiveness of two types of intervention in complicated grief: group intervention (GI) and cognitive-narrative (CN) therapy.

Patients in a complicated grief process were selected (n = 70), and distributed in three groups: cognitive–narrative therapy group (CNTG), group intervention group (GIG) and a control group (CG). Inclusion criteria: adults, with a reference to mourning situation, with personal meaning, for over six months and results in ICG ≥30points (cutoff). The Inventory of Complicated Grief (ICG), the Center for epidemiologic studies depression scale (CES-D) and the trauma questionnaire (ICD-11) were used. Follow-up was performed 3 months after the end of each intervention. Data analysis was performed using the statistical package from social sciences (SPSS 20).

With respect to complicated grief symptoms (CGx) and depression symptoms (Dx) there were statistically significant differences between the CNTG and the CG, but not with the GIG. There was no statistically significant effect in post-traumatic symptoms (PTx), even though both interventions had a slight decrease. When the CNTG and the GIG were directly compared, there was only a statistically significant difference between PTx.

In our single center cohort, CNTG was a more effective intervention in complicated grief patients for CGx and Dx reduction. For PTx, no intervention was superior. Larger multi-center studies are needed to validate these results.

The authors have not supplied their declaration of competing interest.