Epidemiology
Diagnosis
Statistics
Cerebrospinal
Syphilis
Dissemination
Cerebral
Neoplasm
History
Cerebral
Abscess
Etiology
Anterior
Poliomyelitis
Symptomatology
Meningitis
Acute
Epidemic
Encephalitis
Course
Chronic
Epidemic
Encephalitis
Pathology
Symptomatic
Grouping of Cases Treatment
During the past decade, the medical profession has witnessed with absorbing interest the appearance, development and spread of what is, to all intents, a new disease. Heralded from abroad by extensive reports and descriptions, there appeared in the cities of the Eastern seaboard in the autumn of 1920, examples of what seemed to those acquainted with neurologic disturbances to be an unfamiliar and remarkably interesting disease. One by one, the programs of the neurologic societies of the larger centers in the East recognized the advent of a clinical syndrome entitled "encephalitis lethargica." The presentation of patients, case reports, clinical and pathologic studies or etiologic investigations at almost every meeting devoted to medical or neurologic subjects indicated the widespread incidence of the