Prolonged Grief Disorder (PGD): When Loss Doesn't Lift

Prolonged grief disorder (PGD) is a mental health condition defined by intense, persistent, and disabling grief following the death of a person you were close to. It is grief that does not ease with the passage of time and that significantly interferes with daily functioning, relationships, and the ability to re-engage with life.

PGD is one of the newest formal psychiatric diagnoses. It was recognised by the World Health Organisation in the ICD-11 in 2019, and by the American Psychiatric Association in the DSM-5-TR in 2022, the most recent addition to that manual. Its inclusion followed decades of research showing that a meaningful proportion of bereaved people experience a grief response that is qualitatively different from normal bereavement and that does not resolve without targeted support.

Estimates of how many bereaved people develop PGD vary by population and methodology. In general population probability samples, rates of approximately 5 to 7% of bereaved individuals are reported. Across bereaved populations more broadly, international estimates suggest approximately 13% may develop PGD. Among people who have lost someone to sudden, violent, or traumatic death, rates are substantially higher, with some studies reporting close to half of those bereaved by homicide or accident meeting criteria.

PGD is not a sign that someone loved too much, or that they are not trying hard enough to move forward. It is a recognised clinical condition with identifiable risk factors, neurobiological features, and effective treatments.

When prolonged grief disorder takes hold, time does not work the way it is supposed to. It has been months, possibly years, since the loss. People around you may have begun to expect you to be getting on with things. But inside, the loss feels as immediate and as unbearable as it did at the beginning.

The longing is the most constant feature. Not just sadness, but a specific, aching yearning for the person who has gone, for their voice, their presence, the ordinary texture of life with them in it. This longing does not respond to distraction or time the way normal grief does. It has a quality of incompleteness, as though part of yourself has been removed and the absence is felt acutely in every ordinary moment.

Many people with PGD describe a feeling of being unable to believe the loss is real, even when they know intellectually that it is. The mind returns compulsively to the person, to memories of them, to the circumstances of their death, to images and sounds that surface without invitation. Accepting the permanence of the loss feels not just painful but genuinely impossible.

Daily life can feel meaningless or surreal. Activities, relationships, and aspirations that existed before the loss lose their coherence. Some people describe feeling that their identity itself has been destabilised, as though who they were was inseparably tied to who they lost.

What distinguishes PGD from the depths of early grief is not intensity alone but persistence and functional impairment. The person is not moving through the grief, even slowly. They are held within it.

To family and friends, prolonged grief disorder can be difficult to understand and to respond to helpfully. In the early weeks and months, visible grief is expected and welcomed. As time passes, the social expectation often shifts toward recovery, and expressions of continued acute grief can become harder for others to sit with.

People with PGD may withdraw from social relationships, not from indifference but because engagement with the ordinary world of people and plans can feel like a betrayal of the person who has died, or simply too painful to manage. They may continue to organise their lives around the person who is gone, maintaining routines or environments as they were, avoiding reminders, or conversely, being unable to stop seeking them.

Grief-related irritability, anger, or bitterness is sometimes what others see most clearly, particularly when the circumstances of the death were sudden, violent, or involved perceived failures of care. This can be misread as a personality change rather than recognised as grief.

What is most important for those close to someone with PGD is to understand that the passage of time alone is not treatment, and that encouraging the person to move on, to stop dwelling, or to focus on the positive is rarely helpful and can deepen the person's sense of being misunderstood and alone in their loss.

Under the DSM-5-TR, a diagnosis of PGD requires:

Criterion A: The death of a person close to the bereaved individual, at least 12 months prior to diagnosis (6 months for children).

Criterion B: At least one of the following, present most days at a clinically significant level:

• Intense yearning or longing for the deceased
• Preoccupation with the deceased or the circumstances of their death

Criterion C: At least three of the following, present most days at a clinically significant level since the death:

• Identity disruption, feeling that part of oneself has died with the person
• Marked sense of disbelief about the death
• Avoidance of reminders that the person has died
• Intense emotional pain related to the death, including anger, bitterness, or sorrow
• Difficulty re-engaging with life, including pursuing interests, planning for the future, or connecting with others
• Emotional numbness, the sense of being disconnected from emotions or from one's surroundings
• Feeling that life is meaningless or empty without the deceased
• Intense loneliness, a feeling of being alone in the world without the person

Criterion D: The disturbance causes clinically significant impairment in social, occupational, or other important areas of functioning.

The most commonly reported symptoms across research studies are persistent yearning and longing, intrusive thoughts or images related to the deceased, and difficulty accepting the reality of the loss.

The ICD-11 uses a similar but not identical framework, with a six-month rather than twelve-month time threshold. Both systems recognise that the critical feature of PGD is not the presence of grief itself, but its persistence, intensity, and the degree to which it prevents the person from adapting to a life in which the deceased is no longer present.

Grief after loss is universal. What determines whether grief becomes prolonged and disabling involves an interaction between the nature of the loss, the person's history and attachment style, and the context in which they are grieving.

The nature of the death. Sudden, unexpected, or violent deaths are among the strongest predictors of PGD. When there is no opportunity to prepare for the loss, no chance to say goodbye, or when the death involved traumatic circumstances such as accident, homicide, suicide, or overdose, the risk of developing PGD is substantially elevated. Research consistently shows that the unexpectedness of bereavement is one of the most significant contributors to grief severity and to the development of the disorder.

Attachment history and style. PGD has meaningful roots in attachment theory. People with anxious attachment styles, for whom relationships are a primary source of safety and self-regulation, are at elevated risk of developing PGD when a core attachment figure is lost. The degree of emotional dependency on the person who died is a documented risk factor. When the relationship with the deceased was one in which the person's sense of identity, safety, or purpose was deeply embedded, the loss disrupts not just the relationship but the person's fundamental orientation to the world.

Prior mental health history. A personal history of depression or anxiety substantially increases the risk of developing PGD following bereavement. Elevated grief symptoms present before the death, as with anticipatory grief during a terminal illness, are also predictive of prolonged grief after the death occurs.

Social support and isolation. The absence of adequate social support following loss is a consistently identified risk factor for PGD. Grief that is witnessed, held, and accompanied by others follows a different trajectory from grief carried alone. Social isolation after loss removes one of the most important natural buffers against the disorder's development.

The relationship to the deceased. The closer the relationship and the more central the person was to the bereaved individual's daily life and identity, the greater the risk of PGD following their death. Bereaved parents, spouses, and those who had an unusually close or enmeshed relationship with the deceased show elevated rates of prolonged grief.

Socioeconomic and demographic factors. Research has identified older age, female sex, lower socioeconomic status, and low educational level as associated with higher PGD risk, likely reflecting differences in social resources, access to support, and the structural conditions under which grief is processed.

One of the most important clinical and human distinctions in this area is between grief that is painful and grief that has become a disorder. The formal recognition of PGD as a diagnosis came with significant debate, because there are real risks of pathologising grief that is simply profound, particularly after catastrophic losses. Understanding the distinction matters.

Normal grief is an intensely painful but adaptive process. It typically follows a trajectory in which the sharpest distress is concentrated in the early period after loss and then, over months, gradually softens. This does not mean the person stops feeling the loss. Anniversary dates, unexpected reminders, and life transitions will continue to bring grief to the surface for years, and in many cases for the rest of a person's life. Normal grief is not linear and it is not a problem to be solved. Most bereaved people move through it without professional intervention.

Prolonged grief disorder is distinguished not by the depth of love or the significance of the loss but by specific features of how the grief is being processed. In PGD, the intensity of grief does not diminish meaningfully over time. The person remains functionally impaired by the loss well beyond the acute period. Adaptation to a world without the deceased does not progress. The grief continues to dominate daily experience in a way that prevents functioning, connection, and the gradual reconstruction of a meaningful life.

A practical way to hold the distinction: grief that is painful but moving, even slowly, is grief. Grief that is as acute at twelve months as it was at three, that prevents engagement with ordinary life, and that has not responded to the support of time, community, and natural coping, warrants assessment and support.

Research is careful to note that for some bereaved people, such as parents who have lost a child, or those bereaved by violent or sudden death, severe and prolonged grief responses are statistically very common. The presence of symptoms alone does not determine a diagnosis. Functional impairment and the failure of natural adaptive processes are the critical markers.

One of the most important clinical and human distinctions in this area is between grief that is painful and grief that has become a disorder. The formal recognition of PGD as a diagnosis came with significant debate, because there are real risks of pathologising grief that is simply profound, particularly after catastrophic losses. Understanding the distinction matters. Normal grief is an intensely painful but adaptive process. It typically follows a trajectory in which the sharpest distress is concentrated in the early period after loss and then, over months, gradually softens. This does not mean the person stops feeling the loss. Anniversary dates, unexpected reminders, and life transitions will continue to bring grief to the surface for years, and in many cases for the rest of a persons life. Normal grief is not linear and it is not a problem to be solved. Most bereaved people move through it without professional intervention. Prolonged grief disorder is distinguished not by the depth of love or the significance of the loss but by specific features of how the grief is being processed. In PGD, the intensity of grief does not diminish meaningfully over time. The person remains functionally impaired by the loss well beyond the acute period. Adaptation to a world without the deceased does not progress. The grief continues to dominate daily experience in a way that prevents functioning, connection, and the gradual reconstruction of a meaningful life. A practical way to hold the distinction: grief that is painful but moving, even slowly, is grief. Grief that is as acute at twelve months as it was at three, that prevents engagement with ordinary life, and that has not responded to the support of time, community, and natural coping, warrants assessment and support. Research is careful to note that for some bereaved people, such as parents who have lost a child, or those bereaved by violent or sudden death, severe and prolonged grief responses are statistically very common. The presence of symptoms alone does not determine a diagnosis. Functional impairment and the failure of natural adaptive processes are the critical markers. PGD vs. depression. PGD and depression frequently co-occur, and both produce low mood, withdrawal, and impaired functioning. They are, however, distinct conditions with different cores. Depression involves a pervasive low mood and anhedonia that applies broadly to the persons life. The core of PGD is specifically yearning and grief focused on the person who died. Antidepressants treat comorbid depression when present, but research has found they do not significantly reduce the grief-specific symptoms of PGD when administered alone.

PGD rarely exists in isolation. Research using systematic review and meta-analysis has found that among bereaved adults with PGD, depression co-occurs at approximately 63%, anxiety disorders at around 54%, and PTSD at approximately 49%.

Depression. The overlap between PGD and major depressive disorder is substantial but the two conditions are distinct and require differentiated treatment. Depression focused purely on depressive cognitions and anhedonia responds to antidepressants and standard CBT in ways that PGD-specific symptoms do not. When both are present, which is common, both require attention. CBT that addresses both grief-specific content and depressive cognitions outperforms interventions that target only one.

Post-traumatic stress disorder (PTSD). When the death was sudden, violent, or traumatic, PTSD and PGD often co-occur. PTSD involves re-experiencing the traumatic event with its associated fear and horror, while PGD centres on yearning and difficulty adapting to the absence. The two conditions share avoidance features and can reinforce each other, but their treatment requirements differ in meaningful ways, particularly regarding exposure-based work.

Anxiety disorders. Generalised anxiety about safety, about one's own mortality, or about the welfare of others remaining alive co-occurs with PGD at elevated rates. Anxiety can also manifest as compulsive reassurance-seeking or hypervigilance in response to the loss.

Suicidal ideation. PGD is associated with significantly elevated rates of suicidal thinking. Research consistently identifies suicidal ideation as more prevalent in people with PGD than in those experiencing normal grief, and the severity of PGD symptoms has been positively associated with suicidal ideation across multiple studies. This is one of the most important clinical reasons for the formal recognition of PGD as a condition requiring targeted professional support.

Sleep disturbances. Disrupted sleep is a highly common feature of PGD and is often inadequately addressed by grief-focused treatment alone. Research supports the use of CBT for insomnia as an adjunct to grief-specific therapy for people with PGD who report significant sleep difficulties.

Several psychological patterns tend to develop in and maintain prolonged grief disorder, many of which feel like natural responses to loss but function to prevent the adaptive processing that recovery requires.

Grief avoidance. Deliberately avoiding reminders of the person who died, including places, objects, activities, or conversations associated with them, provides temporary relief from acute grief but prevents the gradual exposure to loss-related material that allows grief to be processed over time. Avoidance is one of the most significant maintaining factors in PGD.

Rumination. Repetitive, unproductive dwelling on the loss, on what could have been done differently, on why it happened, or on replaying final moments or conversations. Rumination keeps the loss cognitively active without moving toward integration. It is distinct from the kind of reflective processing that supports adaptation.

Counterfactual thinking. Persistent preoccupation with what might have been different, including scenarios in which the person would still be alive. Counterfactual thinking sustains a state of unresolved incompleteness in which the reality of the loss cannot be fully accepted.

Identity fusion. When a person's sense of self was so intertwined with the deceased that the loss of the person feels equivalent to the loss of oneself. This pattern makes re-engagement with life particularly difficult, because the question of who one is without the person remains unanswered.

Emotional avoidance. Suppressing or not allowing the full emotional experience of grief in order to function. While some emotional regulation is adaptive in bereavement, consistent suppression of grief-related emotion prevents processing and can sustain the disorder.

Yearning-driven connection behaviours. Behaviours maintained specifically to stay connected to the deceased, including preserving environments or objects unchanged, repeatedly viewing photographs or videos, or avoiding any change that might signal moving forward. These behaviours are understandable expressions of love and attachment, but when they prevent adaptation to the reality of the loss, they can maintain PGD.

The people I work with who have prolonged grief are not people who lack resilience. They are people who loved deeply and for whom the world has changed in a way that feels impossible to accept. What I try to help them understand is that the goal of grief therapy is not to stop loving the person who died, or to get over them, or to stop feeling their absence. The goal is to find a way to carry the person with you, rather than being held in place by the loss. That is a different thing entirely. And when people can feel that distinction, something usually begins to shift."

— Samantha Daly

Grief does not have a timeline, and seeking support does not mean your grief has become a problem to be fixed. But there are specific circumstances in which professional support makes a meaningful difference.

Consider reaching out to a professional if:

• You are more than six months out from your loss and the intensity of your grief has not diminished in any meaningful way
• You are finding it difficult to engage in daily responsibilities, relationships, or activities that mattered to you before the loss
• You are experiencing persistent difficulty accepting that the loss is real and permanent
• You are having thoughts of suicide, of not wanting to be alive, or of wanting to be with the person who died
• Sleep disruption is significantly affecting your functioning and has not improved with time
• You feel that your sense of who you are has been fundamentally destabilised by the loss
• The circumstances of the death were sudden, violent, or traumatic, and you are experiencing intrusive memories or fear alongside your grief
• People around you are expressing concern and you are aware that you are not moving through the loss

Effective treatments for PGD include:

• Prolonged Grief Therapy (PGT) is a structured 16-session treatment developed specifically for PGD and is the most thoroughly researched grief-specific intervention. It combines elements drawn from prolonged exposure therapy for PTSD with a focus on restoring a sense of meaning and purpose in a life without the deceased. Two landmark randomised controlled trials demonstrated PGT is significantly more effective than interpersonal psychotherapy for PGD. Treatment is structured around six themes: accepting grief and its associated emotions, envisioning a meaningful future, strengthening relationships, constructing a narrative around the death, learning to live with reminders of the loss, and connecting with enduring memories of the person who died.
• Cognitive Behavioural Therapy (CBT) for PGD is the most broadly researched psychotherapeutic approach across the literature, with consistent evidence of effectiveness in individual, group, and online formats. A 2025 systematic review of 30 randomised controlled trials found CBT to be the most effective intervention for PGD across populations. CBT for grief addresses the avoidance behaviours, rumination, counterfactual thinking, and maladaptive beliefs about the loss that maintain the disorder. Grief-focused CBT that incorporates exposure to loss-related material shows particularly strong effects.
• Eye Movement Desensitisation and Reprocessing (EMDR) has an emerging evidence base for PGD, particularly when traumatic circumstances of death contribute to the grief presentation. EMDR targets the unprocessed memories and blockages associated with the loss and helps integrate the experience so that the person can move forward. A 2024 systematic review found EMDR, particularly in combination with CBT, to be effective in reducing grief, PTSD, and depression symptoms in bereaved individuals.
• Complicated Grief Treatment (CGT) is a structured approach that combines elements of interpersonal therapy and CBT, including exposure techniques, with a particular focus on relationships and personal goals. It is designed specifically for PGD and has demonstrated efficacy in multiple clinical trials.
• Medication for comorbid symptoms. There are currently no medications that specifically treat PGD symptoms. However, when depression or anxiety co-occurs, antidepressants may be appropriate for those comorbid presentations. Research has shown that antidepressants combined with grief-specific therapy improve depressive symptoms more than therapy alone, though grief-specific symptoms are best addressed through psychological treatment.
• Bereavement support groups. Peer support and bereavement groups provide meaningful social connection and reduce isolation, which is itself a risk factor for PGD. While groups are not sufficient as a standalone treatment for PGD, they offer real value as an adjunct, particularly in reducing the feeling of being alone in the experience of loss.