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Analysis of status epilepticus with Mycoplasma pneumoniae encephalitis

Jainn-Jim Lin1, Kuang-Lin Lin, Shao-Hsuan Hsia

  • 1Division of Pediatric Neurology, Chang Gung Children's Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.

Pediatric Neurology
|August 5, 2010
PubMed

Insights

Mycoplasma pneumoniae encephalitis can cause severe, refractory status epilepticus in children. This infection leads to high rates of mortality and long-term neurological deficits, underscoring the need for clinical awareness.

Area of Science:

  • Pediatric Neurology
  • Infectious Diseases
  • Clinical Medicine

Background:

  • Encephalitis presents with fever, seizures, and altered consciousness.
  • Mycoplasma pneumoniae is a known respiratory pathogen linked to encephalitis.
  • Status epilepticus is a neurological emergency requiring prompt recognition.

Purpose of the Study:

  • To analyze the clinical characteristics and outcomes of status epilepticus in children with Mycoplasma pneumoniae encephalitis.
  • To evaluate the association between M. pneumoniae infection and severe seizure activity in pediatric patients.

Main Methods:

  • Retrospective review of pediatric cases diagnosed with M. pneumoniae encephalitis between January 2002 and January 2008.
  • Systematic evaluation of clinical data, including symptoms, seizure types, and serological confirmation of M. pneumoniae.
  • Long-term follow-up to assess mortality and neurological morbidity.

Main Results:

  • Nine pediatric patients (4-10 years) with M. pneumoniae encephalitis were identified, all serologically positive.
  • 67% of patients developed refractory status epilepticus.
  • Common symptoms included fever (100%) and upper respiratory issues (78%). Primary focal with secondary generalized seizures were most frequent (44%).
  • Outcomes were poor: 2 deaths, 7 with epilepsy or neurological deficits, and none returned to baseline.

Conclusions:

  • Mycoplasma pneumoniae encephalitis is associated with a high risk of refractory status epilepticus in children.
  • These patients experience significant mortality and long-term neurological morbidity.
  • Clinicians must consider M. pneumoniae as a potential cause of status epilepticus in pediatric encephalitis cases.

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