Related Experiment Video
Updated: May 25, 2026

Neisseria meningitidis Infection of Induced Pluripotent Stem-Cell Derived Brain Endothelial Cells
Published on: July 14, 2020
[Mycoplasma pneumoniae encephalitis associated with basal ganglia necrosis]
N El Hafidi1, B Allouch, F Benbrahim
1Service de pathologie infectieuse et de pneumo-allergologie pédiatrique, hôpital Enfant Rabat, rue Famfdal Cherkaoui Rabat-Instituts, BP 6527, Rabat, Morocco.
Introduction:
Severe central nervous system diseases, such as encephalitis, have been reported in association with Mycoplasma pneumoniae infections.
Case Report:
A previously healthy 5-year-old boy presented with an atypical pneumonia; he rapidly developed encephalitis revealed by lethargy, generalized status epilepticus. MRI showed abnormal signals in the basal ganglia, typical of bilateral striatal necrosis. Serologic tests for M. pneumoniae were positive, the child recovered almost completely.
Conclusion:
M. pneumoniae infection should be considered in all cases of acute encephalopathy; yet the pathogenesis of the disorder is unknown and the treatment uncertain.
Insights
Mycoplasma pneumoniae infections can cause severe encephalitis in children. Early consideration of this pathogen is crucial for diagnosing acute encephalopathy, even with atypical pneumonia symptoms.
Area of Science:
- Neurology
- Infectious Diseases
- Pediatrics
Background:
- Mycoplasma pneumoniae is a known cause of atypical pneumonia.
- Central nervous system (CNS) involvement, including encephalitis, has been associated with M. pneumoniae infections.
Observation:
- A 5-year-old boy with atypical pneumonia rapidly developed encephalitis, presenting with lethargy and status epilepticus.
- Brain MRI revealed bilateral striatal necrosis, a characteristic finding in certain encephalopathic conditions.
Findings:
- Serological tests confirmed M. pneumoniae infection in the affected child.
- The patient experienced significant recovery following the acute illness.
Implications:
- M. pneumoniae should be considered in the differential diagnosis of acute encephalopathy in children.
- Further research is needed to elucidate the pathogenesis and optimize treatment strategies for M. pneumoniae-associated encephalitis.
Related Concept Videos
Encephalitis l: Introduction
Encephalitis ll: Pathophysiology
Bacterial Meningitis I: Introduction
Viral Meningitis
Bacterial Meningitis II: Pathophysiology
Atypical Pneumonia
