Anticipatory grief
The five stages namely, denial, anger, bargaining, depression, and acceptance proposed by Elisabeth Kübler-Ross in her model of grief describe the process by which people undergo after a loss. Anxiety, dread, guilt, helplessness, hopelessness, and feelings of being overwhelmed are also common. However, it is important to note that anticipatory grief is not simply normal grief begun earlier.
Grief
Prolonged grief disorder (PGD), formerly known as complicated grief disorder (CGD), is a pathological reaction to loss representing a cluster of empirically derived symptoms that have been associated with long-term physical and psycho-social dysfunction. Individuals with PGD experience severe grief symptoms for at least six months and are stuck in a maladaptive state. An attempt is being made to create a diagnosis category for complicated grief in the DSM-5. It is currently an "area for further study" in the DSM, under the name Persistent Complex Bereavement Disorder. Critics of including the diagnosis of complicated grief in the DSM-5 say that doing so will constitute characterizing a natural response as a pathology, and will result in wholesale medicating of people who are essentially normal.