"Compulsive hoarding (or pathological hoarding or disposophobia)[1] is the excessive acquisition of possessions (and failure to use or discard them), even if the items are worthless, hazardous, or unsanitary. Compulsive hoarding impairs mobility and interferes with basic activities, including cooking, cleaning, showering, and sleeping. A person who engages in compulsive hoarding is commonly said to be a "pack rat", in reference to that animal's characteristic hoarding."
