Hyperammonemia in a case of herpes simplex and anti-N-methyl-d-aspartate receptor encephalitis.

Abstract:

:Herpes simplex encephalitis (HSE) is a widely accepted risk factor for anti N-methyl-d-aspartate receptor (NMDAR) encephalitis. Association of inherited metabolic disease has never been reported in a patient with HSE and anti-NMDAR encephalitis. Herein, we report a case of pediatric HSE complicated by development of anti-NMDAR encephalitis; this patient showed subsequent recurrent, unexplained episodes of encephalopathy associated with hyperammonemia. The patient was diagnosed with lysinuric protein intolerance (LPI), a rare inborn metabolic disorder. Although it would be difficult to make conclusions regarding the casual link of HSE and anti-NMDAR encephalitis with LPI from a single case, there have been many reports that autoimmune diseases and immunologic abnormalities are frequently associated with LPI. Thus, we speculate that LPI may contribute to the development of anti-NMDAR encephalitis following HSE.

journal_name

Brain Dev

journal_title

Brain & development

authors

Ko JM,Kim WJ,Kim SY,Lee JH,Chae JH,Kim KJ,Lim BC

doi

10.1016/j.braindev.2019.03.013

subject

Has Abstract

pub_date

2019-08-01 00:00:00

pages

634-637

issue

7

eissn

0387-7604

issn

1872-7131

pii

S0387-7604(18)30481-9

journal_volume

41

pub_type

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