A: Two behaviors characterize hoarding: acquiring too many possessions and difficulty in getting rid of them when they are no longer useful or needed. When these behaviors lead to the kind of clutter and disorganization that disrupts or threatens a person's health or safety, or they lead to significant distress, then hoarding becomes a disorder. Simply collecting or owning lots of things does not qualify as hoarding.
A major feature of hoarding is the large amount of disorganized clutter that creates chaos in the home. Rooms can no longer be used as they were intended, moving around the house is difficult, exits are blocked, and life inside the home becomes dysfunctional. Collectors typically keep their possessions well organized, and each item differs from other items to form an interesting and often valuable collection. Further, an important purpose of collecting is to display the special items so that others can appreciate them. People who hoard are seldom able to accomplish such goals.
Q: What kinds of things do hoarders typically save?
A: While it may appear that people who hoard save only trash or things of no real value, in fact most people who hoard save almost everything. Often this includes things that were purchased but never removed from their original wrappers. The most frequent items saved are clothes and newspapers. Other commonly hoarded items include containers, junk mail, books, and craft items.
Q: What factors contribute to the development of hoarding?
A: People who hoard often have deficits in the way they process information. For example, they are often highly distractible and show symptoms of attention deficit hyperactivity disorder. These symptoms make is difficult for them to concentrate on a task without being diverted by other things..." More (scroll towards the bottom of the Amazon order page for the balance of this interview)