encephalitis lethargica
Pronunciation: /ɛnˌsɛfəˈlʌɪtɪs lɪˈθɑːdʒɪkə, ɛnˌkɛfəˈlʌɪtɪs lɪˈθɑːdʒɪkə/
Definition of encephalitis lethargica
noun
- a form of encephalitis caused by a virus and characterized by headache and drowsiness leading to coma. Also called sleepy sickness.