Encephalitis lethargica

Title

Other Names:

Von Economo’s disease

Categories:

Nervous System Diseases

Summary Summary

Encephalitis lethargica (EL) is a disease characterized by high fever, headache, double vision, delayed physical and mental response, extreme tiredness (lethargy), and sometimes coma. Patients may also experience abnormal eye movements, upper body weakness, muscle pain, tremors, neck rigidity, and behavioral changes including psychosis. A worldwide epidemic of EL occurred from 1917 to 1928 with more than one million reported cases.^[1]^[2] Although occasional cases are reported with similar symptoms, EL epidemics have not recurred.^[1] The cause of this condition is unknown, but a viral origin is suspected.^[2] Treatment depends on a person's symptoms. Levodopa and other antiparkinson drugs may be effective in alleviating some symptoms.^[1]

Last updated: 6/7/2016

Do you have updated information on this condition? Let us know.

Learn More Learn More

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

Where to Start

The National Institute of Neurological Disorders and Stroke (NINDS) collects and disseminates research information related to neurological disorders. Click on the link to view information on this topic.

In-Depth Information

The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
PubMed is a searchable database of medical literature and lists journal articles that discuss Encephalitis lethargica. Click on the link to view a sample search on this topic.

GARD Answers GARD Answers

Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know. Submit a new question

When I was about 8-years-old, I was hospitalized due to encephalitis lethargica. I was extremely ill and it took me a long time to recover. Last May, I was diagnosed with a benign meningioma. Could my childhood illness be related to the development of my tumor? Are there any documented cases of meningioma in other survivors of encephalitis lethargica? See answer

Have a question? Contact a GARD Information Specialist.

References References

NINDS Encephalitis Lethargica Information Page. National Institute of Neurological Disorders and Stroke Website. February 12, 2007; http://www.ninds.nih.gov/disorders/encephalitis_lethargica/encephalitis_lethargica.htm. Accessed 6/7/2016.
Dennis Tappea, David E. Alquezar-Planas. Medical and molecular perspectives into a forgotten epidemic: Encephalitis lethargica, viruses, and high-throughput sequencing. Journal of Clinical Virology. October 2014; 61(2):189-195. https://www.ncbi.nlm.nih.gov/pubmed/25129855.

Do you know of a review article? Send us your suggestions.