A software developer recently diagnosed with anti-NMDA receptor encephalitis shared their harrowing experience on Hacker News, describing how the autoimmune condition initially presented as flu-like symptoms and severe anxiety before progressing to psychosis and balance issues. The condition occurs when antibodies attack NMDA receptors in the brain, causing inflammation that can mimic psychiatric disorders.

Initial symptoms included heart racing, night sweats, chronic jaw pain, and difficulty catching a ball from their young son. Psychological symptoms escalated to suicidal ideation and auditory hallucinations, leading to a psychiatric hospitalization where doctors initially diagnosed generalized anxiety disorder. Brigham and Women's Hospital in Boston eventually confirmed the correct diagnosis after a month of testing including MRIs and lumbar punctures.

The patient received intravenous immunoglobulin (IVIG) and methylprednisolone treatment before the official diagnosis was confirmed, noting that early intervention likely contributed to their positive prognosis. They're now participating in the CIELO clinical trial testing satralizumab for treating this condition, while tapering off medications previously prescribed for misdiagnosed psychiatric symptoms.

The story draws parallels to Susannah Cahalan's memoir "Brain on Fire" and highlights how this rare condition may have contributed to historical accounts of demonic possession. Recovery is exceeding expectations, though the experience stands as the worst of their life. Gratitude goes to their wife Kaitlyn Brady and employer Charlie Marsh for support throughout the ordeal.

The developer's account serves as both personal testimony and cautionary tale for others experiencing unexplained neurological symptoms that might initially appear psychiatric in nature.