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The fifth and newest revision of the psychology handbook the Diagnostic and Statistical Manual of Mental Disorders, or DSM-5, is filled with conditions you've probably heard of before, such as anxiety and amnesia, but a few conditions that might be added in the new edition may be less commonly understood.

Experts are now reviewing the new version of the book, due to be published in May 2013, and determining which new diagnoses to include.

To make the cut, a condition should have a unique set of symptoms and a verifiable medical cause, said Dr. Theodore Stern, director of psychiatric consultation at Massachusetts General Hospital and professor of psychiatry at Harvard Medical School, who is not involved in the review process.
Here are seven conditions under consideration for inclusion in the new edition.