People with prolonged grief disorder have increased activity in areas of the brain involved in memory and emotion processing when they see death-related images, like a graveyard
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For most individuals, the intense pain of grief gradually lessens over time. However, for a small percentage, this grief can persist and intensify, leading to a condition known as prolonged grief disorder (PGD). A recent study delves into the development of PGD, shedding light on its characteristics and underlying mechanisms. This insight may assist healthcare professionals in identifying individuals who may require additional support following a loss.
The inclusion of prolonged grief disorder in the American Psychiatric Association’s diagnostic manual in 2022 sparked controversy regarding the medicalisation of grief and the establishment of arbitrary timelines for normal grieving processes. However, an examination of brain activity in individuals with PGD compared to those without the condition suggests that PGD is a distinct disorder with its own set of characteristics.
Research conducted by Richard Bryant at the University of New South Wales in Sydney, Australia, compared brain activity in individuals with PGD to those with post-traumatic stress disorder (PTSD), depression, and anxiety following a bereavement. The findings indicated that individuals with PGD exhibit more pronounced changes in multiple reward-related brain circuits.
Studies have demonstrated that individuals with PGD display heightened activation in the nucleus accumbens, a region associated with reward and motivation, in response to grief-related stimuli. This heightened activation correlates with a strong yearning for the deceased. Furthermore, individuals with PGD tend to exhibit a bias towards reminders of the deceased, unlike those with PTSD or anxiety who typically display avoidance behaviors.
Additional research has shown increased activity in the amygdala and right hippocampus – areas involved in emotion processing and memory – in individuals with PGD when exposed to death-related images. This heightened activation suggests difficulties in emotional regulation and a reduced capacity to experience positive emotions.
In individuals with PGD, the brain’s reward system becomes fixated on the deceased individual, leading to an intense longing for them. This persistent grief characterises PGD, where individuals struggle to adapt and move forward following a loss.
While the findings of the study provide valuable insights into the neurobiological aspects of PGD, the practical application of this information in diagnosing the disorder remains challenging. Most individuals undergoing the grieving process do not undergo brain scans, and the complexity and variability of grief make it difficult to assess through a single scan.
However, the research may offer predictive value in identifying individuals at risk of developing PGD post-bereavement. Early brain scans of bereaved individuals revealed that greater connectivity between the amygdala and regions involved in planning and information processing predicted worsening grief symptoms over time. Recognising such patterns could help anticipate the risk of PGD and facilitate timely interventions.
Identifying individuals at risk of PGD early on is crucial for providing appropriate support and interventions. Tailored treatments that address the specific neurobiological mechanisms of PGD can improve outcomes and prevent misdiagnosis. For instance, while PGD typically does not respond to antidepressants, it has shown positive responses to grief-specific psychotherapies. Combining therapeutic approaches based on neurobiological factors can effectively address symptoms associated with PGD.
If you or someone you know needs support during difficult times, consider reaching out to mental health helplines for assistance.
