Understanding Prolonged Grief Disorder: A Hidden Crisis for 1 in 10 Grieving Individuals

For many, the journey through grief is a winding, unpredictable road marked by waves of sorrow, memory, and eventual healing. Yet for a troubling minority—up to 10% of people who lose a loved one—this path becomes a dead end. Prolonged grief disorder (PGD) is a psychiatric condition that leaves individuals trapped in a relentless cycle of anguish, unable to find peace even after months have passed. Defined by the World Health Organisation in 2018, PGD is marked by persistent feelings of despair, guilt, and an overwhelming inability to accept loss. It is not simply a matter of time; for those afflicted, the pain of absence never fades. The NHS describes its symptoms as haunting: an unceasing preoccupation with the deceased, difficulty functioning in daily life, suicidal ideation, and a profound sense of meaninglessness. This disorder, once overlooked, is now at the forefront of mental health research, as scientists seek to unravel why some people never recover from the death of a loved one.

The impact of PGD on individuals and communities is profound. Those trapped in this condition often describe a psychological hunger—a deep craving for the presence of the deceased. Neuroscientists at the University of New South Wales in Australia have discovered that PGD shares neural pathways with depression and anxiety, involving brain regions tied to reward, attachment, and emotional processing. This suggests that the disorder may stem from a neurological 'stuckness,' where the brain remains locked in a state of longing. Studies using functional MRI scans reveal that people with PGD exhibit hyperactivity in areas like the nucleus accumbens and orbitofrontal cortex, which are associated with motivation and desire. These same circuits are implicated in addiction and other forms of psychological dependency, hinting that the brain may be literally craving the lost loved one in a way similar to how it craves drugs or other addictive stimuli.

The emotional toll of PGD extends beyond the individual, rippling through families and social networks. Support systems can become strained as those suffering from the disorder struggle to engage in normal life. Children and other family members may feel burdened by the persistent grief of a parent or guardian. Public health experts warn that without intervention, PGD can lead to a cascade of problems: social isolation, financial instability, and even increased risk of suicide. Credible advisories from the NHS and mental health organisations stress the importance of early recognition and treatment, yet stigma and lack of awareness remain significant barriers. As Richard Bryant, lead author of the recent study, explains, 'We need to stop thinking of prolonged grief as a natural response to loss. It's a disorder that requires medical attention, just like any other mental health condition.'

Despite the growing body of research, PGD remains an enigma in many ways. While traumatic or sudden deaths are associated with higher rates of the disorder, not everyone who experiences such a loss develops PGD. This variability puzzles scientists, who are now turning to neuroscience to find answers. The study published in *Trends in Neurosciences* highlights the overlap between PGD and other mental health conditions, such as depression and post-traumatic stress disorder. The shared symptoms of rumination and emotional distress suggest a common neurological foundation, but the mechanisms that differentiate PGD from these conditions are still unclear. Bryant's team hopes that future research with larger cohorts will clarify these complexities, allowing for more targeted interventions.

As the understanding of PGD deepens, so does the urgency to address its impact on public well-being. Experts warn that without proper treatment, the disorder can persist for years, robbing individuals of their ability to live fulfilling lives. Current therapies, such as cognitive behavioural therapy and medication, show promise, but their effectiveness varies. The key, Bryant argues, is to normalise the condition and destigmatise seeking help. 'We need to raise awareness,' he says. 'Only then can we ensure that people with prolonged grief disorder receive the care they need to heal.' For now, the road ahead for those trapped in grief remains uncertain—but with science shedding light on the brain's role in this condition, there is hope that the future will hold new paths to recovery.