the.com/encephalitis

Your brain, inflamed and uninvited, rsvp'ing no to normal function.

means Inflammation of the brain, usually caused by a viral infection or an autoimmune reaction, that can disrupt thinking, movement, or consciousness.

from Built from Greek enkephalos, 'brain' (literally 'in the head,' from en- 'in' + kephalē 'head'), plus the medical suffix -itis, 'inflammation.' The -itis ending itself became standard in 19th-century medical Latin/Greek coinages for naming diseases by the body part they attack — the same pattern that gives us arthritis, tonsillitis, and appendicitis.

literal meaning
brain plus itis, inflammation, Greek for bad news
usual suspects
viruses like herpes, rabies, or your own immune system
autoimmune twist
anti-NMDA receptor type mistaken for psychiatric illness for years
warning signs
fever, confusion, seizures, personality changes within days
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