-See DSM-5 definition of hoarding disorder.
-Disposing of the items causes extreme anxiety and emotional distress.

Background
Affects 2% and 6% of adults.
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The key distinguishing feature of hoarding disorder is that with hoarders, disposing of the items causes extreme anxiety and emotional distress.

Further Reading / Reference

N Engl J Med 2014;370(21):2023-2030. http://www.nejm.org/doi/full/10.1056/NEJMcp1313051

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