What Is Complicated Grief Disorder?
By CRYSTAL BAI •
The short answer: Complicated grief (now formally known as Prolonged Grief Disorder in the DSM-5-TR) is an intense, prolonged grief response that significantly impairs functioning for more than 12 months after a bereavement (6 months for children). It is distinct from normal grief and from depression or PTSD, and it responds to specialized treatment — particularly Complicated Grief Treatment (CGT), a structured therapy developed by Columbia University researchers.
What Is Complicated Grief Disorder?
Grief is a natural response to loss — painful, disorienting, and entirely normal. But for approximately 7–10% of bereaved people, grief does not follow the expected trajectory toward gradual integration. Instead, it becomes stuck — a persistent, debilitating condition that continues to significantly impair daily life long after the loss.
This condition has been called complicated grief, prolonged grief disorder, pathological grief, and traumatic grief at different points in clinical history. In 2022, it was officially added to the DSM-5-TR under the name Prolonged Grief Disorder (PGD) — giving it formal diagnostic status as a distinct mental health condition for the first time.
Diagnostic Criteria for Prolonged Grief Disorder (DSM-5-TR)
To receive a diagnosis of Prolonged Grief Disorder, a person must:
- Have experienced the death of someone close
- Experience intense longing or yearning for the deceased, and/or preoccupation with the deceased (often focused on the circumstances of death)
- Experience at least three of the following: identity disruption, disbelief about the death, avoidance of reminders of the loss, intense emotional pain, difficulty reintegrating into activities and relationships, emotional numbness, feeling that life is meaningless, intense loneliness
- These symptoms cause significant functional impairment
- The disturbance has persisted for at least 12 months after the death (6 months for children)
- The disturbance is not better explained by another mental disorder (major depression, PTSD, etc.), though PGD can co-occur with these conditions
How Complicated Grief Differs From Normal Grief
Normal grief is intense but moves — not in a linear path, not on a schedule, but eventually toward a place where the loss is integrated into life rather than blocking it. People with normal grief typically regain the ability to function, find meaning, and re-engage with life and relationships, even while continuing to miss the person who died.
Complicated grief does not move in this way. The bereaved person may:
- Be unable to accept that the person is truly dead, even months or years later
- Avoid any reminder of the person (or conversely, be unable to stop seeking reminders)
- Have profound difficulty functioning — unable to work, maintain relationships, care for themselves
- Feel that life has no meaning without the person who died
- Experience intense bitterness or anger that does not diminish
- Feel that a part of their own identity has died
How Complicated Grief Differs From Depression and PTSD
Depression involves pervasive sadness, loss of pleasure, and hopelessness — but not the specific longing and preoccupation with the deceased that defines complicated grief. PGD can co-occur with depression, but they require different treatment approaches.
PTSD involves re-experiencing traumatic events through flashbacks and nightmares, and can develop after traumatic bereavement (sudden or violent death). PGD and PTSD can co-occur, but PGD's central feature — yearning for the specific person — is different from PTSD's trauma-focused symptom profile.
Who Is at Higher Risk for Complicated Grief?
Risk factors include:
- Sudden, unexpected, or traumatic loss (suicide, accident, homicide)
- Loss of a child
- Very close or dependent relationship with the deceased
- Ambivalent or conflicted relationship with the deceased
- Limited social support
- Prior history of depression, anxiety, or trauma
- Disenfranchised grief (loss not acknowledged by others)
- Multiple losses in close succession
Treatment for Prolonged Grief Disorder
Complicated Grief Treatment (CGT), developed by researchers at Columbia University (Drs. Katherine Shear and colleagues), is the evidence-based first-line treatment. CGT is a structured, 16-session therapy that integrates techniques from cognitive-behavioral therapy and interpersonal therapy, with specific focus on grief processing, re-engagement with life, and working through the relationship with the deceased. Research shows CGT is significantly more effective for PGD than standard depression treatment or supportive counseling alone.
Medication can help with co-occurring depression or anxiety but does not treat PGD directly. Grief support groups alone are generally insufficient for clinical PGD, though they may be helpful adjuncts.
Getting Help for Complicated Grief
If you or someone you know shows signs of complicated grief — particularly grief that continues to significantly impair functioning more than a year after a loss — a mental health professional trained in PGD/complicated grief treatment can assess and treat the condition. The Columbia Center for Complicated Grief offers a therapist directory at complicatedgrief.columbia.edu.
Frequently Asked Questions
What is the difference between normal grief and complicated grief?
Normal grief is painful but eventually integrates — the person gradually regains the ability to function and find meaning. Complicated grief (Prolonged Grief Disorder) remains stuck: intense, prolonged impairment lasting 12+ months, with features like inability to accept the death, profound identity disruption, and pervasive difficulty functioning.
How long does grief last before it becomes complicated?
DSM-5-TR criteria require symptoms to persist for at least 12 months after the death (6 months for children) before a diagnosis of Prolonged Grief Disorder can be made. This timeframe recognizes that acute grief is normal in the first year; the diagnosis applies when grief remains severely impairing beyond that period.
What is the best treatment for complicated grief?
Complicated Grief Treatment (CGT), developed at Columbia University, is the evidence-based first-line treatment for Prolonged Grief Disorder. It is a structured 16-session therapy significantly more effective than standard counseling for PGD specifically.
Is complicated grief the same as depression?
No. Complicated grief (Prolonged Grief Disorder) is a distinct condition. It can co-occur with depression, but its core feature — intense yearning and preoccupation with the deceased — is different from depression's pervasive sadness and anhedonia. They require different treatment approaches.
Can a death doula help prevent complicated grief?
Death doulas provide grief support before and after death that may help reduce the risk of complicated grief — particularly by facilitating meaningful farewells, supporting family communication, and connecting bereaved family members with professional grief resources. They are not therapists, but their support can meaningfully buffer acute grief.
Renidy connects grieving families with compassionate end-of-life professionals. Find support near you.