sleepy sickness

Noun sleepy sickness has 1 sense

• sleepy sickness(n = noun.state) encephalitis lethargica, epidemic encephalitis, lethargic encephalitis, sleeping sickness - an encephalitis that was epidemic between 1915 and 1926; symptoms include paralysis of the extrinsic eye muscle and extreme muscular weakness;
is a kind of cephalitis, encephalitis, phrenitis