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Definition of Sleepy sickness
1. Noun. An encephalitis that was epidemic between 1915 and 1926; symptoms include paralysis of the extrinsic eye muscle and extreme muscular weakness.
Exact synonyms: Encephalitis Lethargica, Epidemic Encephalitis, Lethargic Encephalitis, Sleeping Sickness
Generic synonyms: Cephalitis, Encephalitis, Phrenitis
Generic synonyms: Cephalitis, Encephalitis, Phrenitis