A man hospitalized with mysterious seizures was diagnosed with tapeworms that had been living in his brain for decades

Doctors who treated a man hospitalized with seizures, disorientation, and strange behavior said tapeworms had been living in his brain for years undetected, according to a case study published Thursday in The New England Journal of Medicine.

The 38-year-old man appeared to be in perfect health until one night when his wife awoke to find him on the floor, shaking and “speaking gibberish,” according to the case report.