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J Korean Soc Emerg Med > Volume 35(2); 2024 > Article
Journal of The Korean Society of Emergency Medicine 2024;35(2): 192-196.
Case of anti-N-methyl D-aspartate receptor encephalitis associated with ovarian teratoma presenting as suicidal ideation
Sukyo Lee , Sejoong Ahn , Jong-Hak Park , Hanjin Cho , Sungjin Kim
Department of Emergency Medicine, Korea University Ansan Hospital, Ansan, Korea
Correspondence  Sungjin Kim ,Tel: 031-412-5385, Fax: 031-412-5585, Email: ksj201648@gmail.com,
Received: June 26, 2023; Revised: September 6, 2023   Accepted: September 13, 2023.  Published online: April 30, 2024.
ABSTRACT
Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a common cause of autoimmune encephalitis. The condition is difficult to diagnose or suspect in the emergency department because it usually presents with nonspecific neurological or psychiatric symptoms. It is often mistaken for viral encephalitis or psychiatric illness. This paper reports a case of anti-NMDAR encephalitis in which the patient experienced mood changes, including suicidal ideation, which led to a delayed diagnosis after three visits to the emergency department. This paper aims to raise awareness among emergency physicians about the possibility of anti-NMDAR encephalitis and to encourage them to consider it in their differential diagnosis in the emergency department.
Key words: Anti-N-methyl-D-aspartate receptor encephalitis; Suicidal ideation; Ovarian teratoma
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