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Noun: encephalitis lethargica
  1. An encephalitis that was epidemic between 1915 and 1926; symptoms include paralysis of the extrinsic eye muscle and extreme muscular weakness
    - sleeping sickness, sleepy sickness, epidemic encephalitis, lethargic encephalitis

Type of: cephalitis, encephalitis, phrenitis [archaic]

Encyclopedia: Encephalitis lethargica