Factor analytic studies have determined that the symptoms of<unk>  form a unitary construct that is separate from symptoms of bereavement-related depression and anxiety. Extensive research has been conducted to identify and isolate the symptoms that constitute<unk>  and distinguish it from diagnostic "nearest neighbors" such as Major Depressive Disorder or Posttraumatic Stress Disorder. These analyses integrate clinical insights with rigorous empirical analysis to determine the set of symptoms that best indicate which bereaved survivors will be at risk of long term dysfunction and distress (e.g., suicidality, excessive alcohol use, disability days, sleep impairment, quality of life impairment, high blood pressure, hospitalizations for serious medical events such as heart attacks). Prigerson et al. proposed diagnostic criteria for<unk>  for inclusion in the DSM-5 and ICD-11.alt=Criteria for<unk>  proposed for DSM-V and ICD-11 Description<unk>  is a normal response to bereavement. Researchers have found that 10–20% of people experience a<unk>  response to bereavement that impacts functioning and has adverse long-term effects on health.<unk><unk>  is considered when an individual's ability to function and level of distress over the loss is extreme and persistent. People with<unk>  feel "stuck" in their<unk> , experience a chronic aching and yearning for the dear departed, feel that they are not the same person anymore (e.g., unsure of their identity, loss of a sense of self and self-worth), become emotionally disconnected from others, and lack the desire to "move on" (sometimes feeling that doing so would be betraying the person who is now deceased).
Prolonged grief disorder
Complicated grief disorder
Acute stress disorder
Transference neurosis
Adjustment disorder
Functional somatic syndrome
Posttraumatic embitterment disorder
Malingering of post-traumatic stress disorder