Hoarding behavior is a unique psychiatric condition that has long been misunderstood, undiagnosed, and untreated. People who hoard most often do not reach out for help. Over time, they may become socially isolated and lose their ability to function in daily life. Their unwillingness to part with possessions, even those perceived by others as having no value, can try the patience of friends and family members. Frustration also abounds in neighborhoods and communities forced to deal with a hoarding problem.