Acute disseminated encephalomyelitis: the time until diagnosis and its subsequent course in children

Taku Omata1, Katsunori Fujii, Yuzo Tanabe

  • 11Division of Child Neurology, Chiba Children's Hospital, Chiba, Japan.

Journal of Child Neurology
|November 13, 2012
PubMed

Insights

Diagnosing acute disseminated encephalomyelitis in children can be delayed, but prompt steroid pulse therapy leads to rapid improvement and good outcomes, even with delayed treatment.

Area of Science:

  • Pediatric Neurology
  • Neuroimmunology
  • Demyelinating Diseases

Background:

  • Acute disseminated encephalomyelitis (ADEM) typically presents acutely but can have delayed diagnosis due to nonspecific symptoms.
  • Understanding diagnostic timelines and treatment responses in pediatric ADEM is crucial for optimizing patient care.

Purpose of the Study:

  • To investigate the time from symptom onset to definitive diagnosis in pediatric ADEM.
  • To evaluate the treatment course and outcomes following steroid pulse therapy in children with ADEM.

Main Methods:

  • Retrospective analysis of 7 pediatric patients diagnosed with ADEM.
  • Assessment of time to diagnosis, treatment protocols (steroid pulse therapy), and clinical outcomes.

Main Results:

  • The mean time from symptom onset to diagnosis was 20.7 days.
  • All patients received steroid pulse therapy, showing rapid improvement.
  • Mean duration from treatment initiation to hospital discharge was 8.6 days.
  • No neurological sequelae were observed in any of the patients.

Conclusions:

  • Pediatric ADEM diagnosis may be delayed compared to adults.
  • Steroid pulse therapy is effective in pediatric ADEM, leading to good outcomes.
  • Delayed diagnosis does not appear to negatively impact the prognosis in pediatric ADEM.

Related Concept Videos

Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Diphtheria01:28

Diphtheria

Diphtheria is an acute, toxin-mediated infectious disease that primarily affects the upper respiratory tract. It is caused by Corynebacterium diphtheriae, a Gram-positive, pleomorphic rod that lacks spore-forming capability and exhibits a characteristic club-shaped morphology under microscopic examination. While C. diphtheriae can asymptomatically colonize mucosal surfaces, clinical disease manifests only when the bacterial strain is lysogenized by a specific β-corynephage. This phage...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...