New-onset refractory status epilepticus (NORSE)

Area of Science:

• Neurology
• Pediatric Neurology
• Critical Care Medicine

Background:

• New-onset refractory status epilepticus (SE) and febrile infection-related epilepsy syndrome (FIRES) are rare, severe neurological conditions.
• These syndromes often affect children and young adults with no prior relevant medical history.
• Initial investigations frequently fail to identify a clear cause.

Purpose of the Study:

• To summarize the clinical presentation, diagnostic challenges, and management strategies for new-onset refractory SE and FIRES.
• To highlight the critical need for prompt investigation and multidisciplinary treatment approaches.
• To discuss emerging therapeutic targets, such as immune modulation and interleukin inhibitors.

Main Methods:

• Review of existing literature on new-onset refractory SE and FIRES.
• Analysis of clinical data regarding patient demographics, diagnostic findings, and treatment outcomes.
• Discussion of current and evolving management paradigms.

Main Results:

• Causes are identified in up to 50% of adult cases, but fewer in children.
• Patients often require prolonged intensive care, with significant risks of mortality and long-term functional disability.
• Chronic epilepsy is a common sequela, although some patients achieve good outcomes.

Conclusions:

• Prompt diagnosis and aggressive management are essential for improving outcomes in new-onset refractory SE and FIRES.
• Treatment involves antiseizure medications, supportive care, and potentially immunomodulatory therapies.
• Optimizing patient care necessitates collaborative, multicenter international research efforts.