Normal symptoms of grief include:
Attacks of yearning and anxiety alternating with longer periods of depression and despair
Preoccupied with thoughts of the dead one
A person with chronic grief experiences and displays all the symptoms of normal grief, but the symptoms are more pronounced and may be more prolonged. http://www.comfort-for-bereavement.com/ChronicGrief.html
This article has some very interesting information about Chronic Grief and the factors that may cause it:
A Systematic Review of the Literature on Complicated (/Chronic) Grief:
We would be very grateful if you would consider donating to the Bereavement Rescue Centre Appeal. We are now at a stage with the Bereavement Rescue Centre project where we must pay for various services relating to the Planning Permission process (Ecological Surveys, Architect drawings and Planning Application fees). We expect to have to raise at least £1200 in order to get through planning before we can apply for a grant to enable the building of the Centre.