Compulsive hoarding
Compulsive hoarding (also known as a hoarding disorder) is a psychiatric health issue (ICD-11, 2018). It refers to higher than usual difficulty discarding one's own possessions or materials, even when they're of no special value. This usually happens in residences (homes, rental property and townhouses) where there are too many items and not enough room, cabinets, or containers in which to store things. Also, those who hoard do not want to get rid of the items. That is especially true with old unneeded items.