A neurobiological perspective on prolonged grief disorder

Area of Science:

• Neuroscience
• Psychiatry
• Mental Health

Background:

• Prolonged grief disorder (PGD) is a psychiatric condition marked by persistent grief and preoccupation with loss.
• Understanding the neurobiological underpinnings of PGD is crucial for developing targeted treatments.

Purpose of the Study:

• To review and synthesize current evidence on the neurobiological processes associated with PGD.
• To identify overlapping and distinct neural mechanisms in PGD compared to other mental disorders like anxiety and depression.

Main Methods:

• Literature review of neuroimaging and neurobiological studies related to PGD.
• Comparative analysis of neural circuitry involved in PGD, anxiety, and depression.

Main Results:

• PGD shares neurobiological overlaps with anxiety and depression, particularly in cognitive control and salience networks.
• Distinctive to PGD are aberrant neural processes in reward pathways and appetitive functions.
• Methodological limitations necessitate caution in interpreting current findings.

Conclusions:

• While PGD shares some neural circuitry with other disorders, specific alterations in reward and appetitive functions may be unique.
• Further rigorous research is required to fully elucidate the distinct neurobiological profile of PGD.