Complicated grief sometimes called Prolonged grief disorder refers to an attachment disorder: Based on DSM category , a diagnosis of "complicated grief" is appropriate for a relatively small group of individuals who meet the follwing criteria:
Criterion A - chronic and disruptive yearning, pining, and longing for the deceased
Criterion B - the person must have four (4) of the following eight (8) remaining symptoms at least several times a day or to a degree intense enough to be distressing and disruptive:
1. trouble accepting the death
2. inability to trust others
3. excessive bitterness or anger related to the death
4. uneasiness about moving on
6. feeling life is empty or meaningless without the deceased
7. envisions a bleak future
8. felling agitated
Criterion C - the above symptom disturbance must cause marked and persistent dysfunction in social, occupational, or other important domains.
Criterion D - the above symptom disturbance must last at least six (6) months.