DOI: 10.14309/crj.0000000000001360 ISSN: 2326-3253
Anti-N‐Methyl‐D Receptor Encephalitis During Long-Term Adalimumab Therapy for Crohn's Disease
Scott MacKay, Baljinder Salh ABSTRACT
A 46-year-old woman with fistulizing Crohn's disease in clinical remission in the setting of long-term adalimumab therapy presented to hospital and was ultimately diagnosed with anti‐N‐methyl‐D (NMDA) receptor antibody-mediated autoimmune encephalitis (NMDAr-AE). Inflammatory central nervous system and antibody-mediated adverse effects have been found to be associated with anti–tumor necrosis factor agents, with 5 previous case reports noting cases of NMDAr-AE in patients on these medications. The current article reports this case, which is unique for the length of adalimumab therapy before this presentation, as well as a summary of literature regarding anti–tumor necrosis factors and NMDAr-AE.