Study finds, Precocious Puberty as a Consequence of Anti-NMD
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Anti-N-methyl-D-aspartate (NMDA) receptor encephalitis is one of the most common autoimmune encephalitis in children. Most children recovered well after anti-NMDA receptor encephalitis. The long-term consequences in pediatric patients of anti-NMDA receptor encephalitis are very infrequently reported.

This case series study retrospectively enrolled 10 children aged below 18 years old with antibody-proved anti-NMDA receptor encephalitis in a tertiary medical center. Long-term neurological consequences of anti-NMDA receptor encephalitis in children were followed.

Results:
--1 boy and 9 girls were enrolled with a median onset age of 3.6 years. The most common initial presentation was verbal reduction and psychiatric symptoms soon after some flu-like prodromal symptoms.

--Nearly all patients then developed decreased level of consciousness, mutism, seizures and orofacial-lingual dyskinesia.

--Autonomic instability occurred in 5 patients, particularly in pre-pubertal children. Only one adolescent patient had ovarian teratoma.

--All patients survived after immunotherapy and were followed for 5.8 ± 3.3 years after discharge.

--Four had epilepsy within 2 years after encephalitis, four had a cognitive deficit, one had mild psychiatric symptoms of hallucination, and none had residual involuntary movements.

--Moreover, two pre-pubertal children developed central precocious puberty about 3 years after encephalitis, and one required gonadotropin-releasing hormone agonist treatment.

Conclusively, Central precocious puberty could be a consequence of anti-NMDA receptor encephalitis in the pre-pubertal children.

Source: https://www.pediatr-neonatol.com/article/S1875-9572(21)00045-0/fulltext?rss=yes
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