Case Records of the Massachusetts General Hospital

Case 33-2025: A 27-Year-Old Man with Abnormal Behaviors, Confusion, and Seizure

Authors: Nadia V. Quijije, M.D., Pedram Heidari, M.D., Michelle Rengarajan, M.D., and Caitlin Adams, M.D.Author Info & Affiliations

Published November 19, 2025

N Engl J Med 2025;393:2036-2045

DOI: 10.1056/NEJMcpc2412523

VOL. 393 NO. 20

Abstract

A 27-year-old man with bipolar I disorder was admitted to the hospital with abnormal behaviors and confusion. Tachycardia was present, and the patient had a seizure. A diagnosis was made.

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Notes

This case was presented at Psychiatry Grand Rounds.

Disclosure forms provided by the authors are available with the full text of this article at NEJM.org.

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Abstract

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Notes

Supplementary Material

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