<unk>  is an obsessive-compulsive disorder involving the collecting or hoarding of books to the point where social relations or health are damaged. One of several psychological disorders associated with books,<unk>  is characterized by the collecting of books which have no use to the collector nor any great intrinsic value to a genuine book collector. The purchase of multiple copies of the same book and edition and the accumulation of books beyond possible capacity of use or enjoyment are frequent symptoms of<unk> .<unk>  is not to be confused with bibliophily, which is the usual love of books and is not considered a clinical psychological disorder.
Other abnormal behaviours involving books include book-eating (bibliophagy), compulsive book-stealing (bibliokleptomania), book-burying (bibliotaphy), bibliocaust, etc.
Bibliomania
Apophenia
Intersexuality
Provisional tic disorder
Paraphilia
Cephalic disorder
Big Five personality traits
ACUITY