Each of these must be grieved. Another type of issue that we don't normally associate with grief was coined in the late 90's by the author Pauline Bass. In her book, Ambiguous Loss, she discusses several issues involving complicated grief. An ambiguous loss is a loss not normally recognized by society. In the case of a death, we have prescribed routines to follow.
Many religions have rituals to follow such as a wake or visitation, a funeral, and a burial.
These comfort and walk the bereaved through those early days. Friends and family often offer support and compassion, as stated above, during the following year. This is not necessarily true, however, for another type of loss. For example, a man whose wife is suffering from Alzheimer's has experienced a loss. While he may sit in the same room with his wife, and she may look the same, she is not necessarily there.