By Danny L. Ross, M.Ed., CAGCS, CSC, LPC-S, BC-TMH, NCC | Updated August 11, 2026 There is no date on the calendar when you are supposed to stop missing someone. You may think about your mother for the rest of your life. A song may still bring tears ten years later. An anniversary can hurt after long stretches of doing well. Those experiences do not automatically mean you have a disorder. Prolonged grief disorder, often shortened to PGD, is a specific clinical diagnosis. It d