Atypical Kleine–Levin syndrome: An elusive entity?

• Main Authors: Swarndeep Singh, Saurabh Kumar, Rohit Verma, Nand Kumar
• Format: Article
• Language: English
• Published: Wolters Kluwer Medknow Publications 2017-01-01
• Series: Journal of Family Medicine and Primary Care
• Subjects: Atypical; India; International Classification of Sleep Disorders; Kleine–Levin syndrome; psychosis
• Online Access: http://www.jfmpc.com/article.asp?issn=2249-4863;year=2017;volume=6;issue=1;spage=161;epage=163;aulast=Singh

Kleine–Levin syndrome (KLS) is a rare disorder (around 1.5 cases per million population), often presenting with triad of recurrent episodes of hypersomnia, hyperphagia, and hypersexuality. However, cases of atypical KLS with features opposite to that being commonly reported are often misdiagnosed as psychosis and present as a diagnostic challenge for the physicians, psychiatrists, and neurologists. We describe a case of atypical KLS which was misdiagnosed as unspecified nonorganic psychosis previously, highlighting the various points which would be helpful in identifying and diagnosing cases of atypical KLS in future.