Japanese encephalitis history and symptoms: Difference between revisions
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==Overview== | ==Overview== | ||
Less than 1% of people infected with Japanese encephalitis (JE) virus develop clinical illness. Mild | Less than 1% of people infected with Japanese encephalitis (JE) virus develop clinical illness. Mild [[infection]]s occur without apparent [[symptom]]s other than [[fever]] with [[headache]]. More severe infection is marked by quick onset [[headache]], high [[fever]], [[neck stiffness/pain|neck stiffness]], [[stupor]], [[disorientation]], [[coma]], [[tremors]], occasional [[convulsions]] (especially in [[infant]]s) and [[spastic]] (but rarely [[flaccid]]) [[paralysis]]. | ||
==History== | ==History== | ||
Most human | Most human [[infection]]s with Japanese encephalitis (JE) virus are [[asymptomatic]]; <1% of people infected develop clinical disease. [[Acute]] encephalitis is the most commonly recognized clinical manifestation. Milder forms of [[disease]], such as [[aseptic meningitis]] or undifferentiated [[febrile]] illness, can also occur. | ||
==Common Symptoms== | ==Common Symptoms== | ||
The incubation period for Japanese encephalitis is usually from 5 to 15 days. | The [[incubation period]] for Japanese encephalitis is usually from 5 to 15 days. | ||
*In persons who develop symptoms, the [[incubation period]] (time from infection until illness) is typically 5-15 days. | *In persons who develop symptoms, the [[incubation period]] (time from infection until illness) is typically 5-15 days. | ||
*Initial symptoms often include [[fever]], [[headache]], and [[vomiting]]. | *Initial symptoms often include [[fever]], [[headache]], and [[vomiting]]. | ||
*Mental status changes, [[neurologic]] symptoms, weakness, and movement disorders might develop over the next few days. | *Mental status changes, [[neurologic]] symptoms, [[weakness]], and [[movement disorders]] might develop over the next few days. | ||
*[[Seizure]]s are common, especially among children. | *[[Seizure]]s are common, especially among children. | ||
*More severe infection is marked by quick onset, [[headache]], high fever, neck stiffness, stupor, disorientation, [[coma]], [[tremors]], occasional | *More severe infection is marked by quick onset, [[headache]], [[high fever]], [[neck stiffness/pain|neck stiffness]], [[stupor]], [[disorientation]], [[coma]], [[tremors]], occasional [[convulsion]]s (especially in [[infant]]s) and [[spastic]] (but rarely [[flaccid]]) [[paralysis]]. | ||
==References== | ==References== | ||
Revision as of 20:34, 27 December 2012
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Japanese encephalitis Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Japanese encephalitis history and symptoms On the Web |
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American Roentgen Ray Society Images of Japanese encephalitis history and symptoms |
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Risk calculators and risk factors for Japanese encephalitis history and symptoms |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
Less than 1% of people infected with Japanese encephalitis (JE) virus develop clinical illness. Mild infections occur without apparent symptoms other than fever with headache. More severe infection is marked by quick onset headache, high fever, neck stiffness, stupor, disorientation, coma, tremors, occasional convulsions (especially in infants) and spastic (but rarely flaccid) paralysis.
History
Most human infections with Japanese encephalitis (JE) virus are asymptomatic; <1% of people infected develop clinical disease. Acute encephalitis is the most commonly recognized clinical manifestation. Milder forms of disease, such as aseptic meningitis or undifferentiated febrile illness, can also occur.
Common Symptoms
The incubation period for Japanese encephalitis is usually from 5 to 15 days.
- In persons who develop symptoms, the incubation period (time from infection until illness) is typically 5-15 days.
- Initial symptoms often include fever, headache, and vomiting.
- Mental status changes, neurologic symptoms, weakness, and movement disorders might develop over the next few days.
- Seizures are common, especially among children.
- More severe infection is marked by quick onset, headache, high fever, neck stiffness, stupor, disorientation, coma, tremors, occasional convulsions (especially in infants) and spastic (but rarely flaccid) paralysis.