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Brain On Fire

What is brain on fire?

· James MacDonald

Key facts

Condition name anti-NMDA receptor encephalitis[1]
Disease type neurological and autoimmune disease[1]
Mechanism antibodies attack NMDA receptors in the brain[1]
Effect disruption of normal brain signaling and inflammation[1]
Memoir subject Susannah Cahalan[2]

Brain on fire is a phrase for anti-NMDA receptor encephalitis, an autoimmune neurological disease where antibodies attack NMDA receptors in the brain, causing inflammation and disrupted signaling. It is also the title of Susannah Cahalan's memoir and the 2016 film based on her story.

Context

The term 'brain on fire' describes anti-NMDA receptor encephalitis, an autoimmune neurological disease where antibodies attack NMDA receptors, disrupting brain signaling and causing encephalitis [1]. Susannah Cahalan's memoir 'Brain on Fire: My Month of Madness' brought the condition to public attention in 2012 [4]. The 2016 film 'Brain on Fire' is based on that memoir and depicts her real-life experience [5]. Common symptoms include hallucinations, seizures, memory loss, confusion, and catatonia [3].

Documented claims

  • The phrase 'brain on fire' refers to anti-NMDA receptor encephalitis, an autoimmune condition causing brain inflammation. [1]
  • Susannah Cahalan's memoir 'Brain on Fire: My Month of Madness' increased public awareness of the condition in 2012. [4]
  • The 2016 film 'Brain on Fire' is based on Cahalan's memoir and tells her real-life story. [5]

Questions and answers

What was the illness in Brain on Fire?

The illness was anti-NMDA receptor encephalitis, an autoimmune neurological disease where antibodies attack NMDA receptors in the brain, causing inflammation and disrupted signaling [1].

What is the cause of brain fire?

The cause is the body creating antibodies against NMDA receptors in the brain, which disrupts normal signaling and leads to brain inflammation [1].

Is Brain on Fire a true story?

Yes, the memoir and film are based on Susannah Cahalan's real-life experience with anti-NMDA receptor encephalitis [5].

Sources

  1. Putting out a brain on fire — cshl.edu (retrieved August 3, 2026)
  2. Brain on fire disease explained — honorhealth.com (retrieved August 3, 2026)
  3. "Brain on Fire" - Susannah's race against time — encephalitis.info (retrieved August 3, 2026)
  4. Brain on Fire: Surviving a Rare and Mysterious Disease — nbcdfw.com (retrieved August 3, 2026)
  5. Brain on Fire (2016) — imdb.com (retrieved August 3, 2026)

Sources last checked August 3, 2026. · More in Entertainment