Broken heart
For most bereaved individuals, the journey through grief will ultimately culminate in an acceptable level of adjustment to a life without their loved one. The Kübler-Ross model postulates that there are five stages of grief after the loss of a loved-one: denial, anger, bargaining, depression and acceptance. And while it is recognized that mourners go through initial period of numbness leading to depression and finally to reorganization and recovery, most modern grief specialists recognize the variations and fluidity of grief experiences differ considerably in intensity and length among cultural groups, individually from person to person as well as depending on the amount of investment put into the relationship.
Ambiguous loss
The difference between regular grief and grief from an ambiguous loss is the type of loss creates the type of grief experienced. Grief in ambiguous loss can be both beneficial and difficult. Since the grief in an ambiguous loss differs than the linear stages of grief there is no pressure to move on or achieve closure, and this allows for people to remember the lost loved one and move on with relationships and life. There are three specific types of grief that can develop from the type of ambiguous loss. 
Anticipatory grief occurs before bereavement, mourning after death occurs, and upon realizing that death may be imminent for a loved one, anticipatory grief sets in. This type of grief is common among families who have a loved one living with Alzheimer's disease. The grief becomes anticipatory due to the knowledge that the loved one's mental state will only become worse, so the grieving process can start very early.