| Subject | German | English |
| med. | lethargisch-ophthalmologisches Syndrom | somnolent-ophthalmoplegic syndrome |
| med. | lethargisches Syndrom | epidemic encephalitis (encephalitis epidemica, encephalitis lethargica) |
| med. | lethargisches Syndrom | sleepy sickness (encephalitis epidemica, encephalitis lethargica) |
| med. | lethargisches Syndrom | lethargic encephalitis (encephalitis epidemica, encephalitis lethargica) |
| med. | lethargisches Syndrom | Economo disease (encephalitis epidemica, encephalitis lethargica) |