Matthew R. Caldwell, MD

Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire

  • 2Articles
  • 3.4KReads
  • 2025–2026Active
  • 5Collaborators
  • 2Citations

About

Matthew R. Caldwell, MD, is affiliated with Dartmouth-Hitchcock Medical Center in Lebanon, New Hampshire. His publications in Psychiatrist.com from 2025 to 2026 focus on addiction, catatonia, and psychotic disorders, including studies on pharmacological mechanisms and complex psychosis cases involving artificial intelligence and substance use. He frequently collaborates with co-authors such as Patrick A. Ho and James K. Rustad.

Publications

PCC
Clozapine, Xanomeline-Trospium, and Catatonia
Rounds in the General Hospital

Clozapine, Xanomeline-Trospium, and Catatonia

August 11, 2026

Abrupt clozapine discontinuation during a cross-taper to xanomeline/trospium chloride can trigger catatonia. Learn how overlapping cholinergic mechanisms complicate this transition and how to manage withdrawal-induced catatonia.
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PCC
Machine Madness: A Case of Artificial Intelligence Psychosis
Case Report

Machine Madness: A Case of Artificial Intelligence Psychosis

December 30, 2025

A 41-year-old man with a history of substance-induced psychosis, developed symptoms of psychosis related to frequent occupational use of AI.
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