Lassa fever history and symptoms: Difference between revisions
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==Diagnosis== | ==Diagnosis== | ||
The current case definition for suspecting Lassa fever is as follows | The current case definition for suspecting Lassa fever is as follows:<ref name=Prevention>{{cite web | title = The Centers for Disease Control and Prevention | url =http://www.cdc.gov/vhf/abroad/pdf/african-healthcare-setting-vhf.pdf }}</ref> | ||
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<br>*The following graph demonstrates the common and rare | <br> | ||
*The following graph demonstrates the common and rare symptoms associated with Lassa fever: | |||
[[File:Signs and symptoms Lassa.png|thumb|center|800 px| | |||
[[File:Signs and symptoms Lassa.png|thumb|center|800 px|Symptoms Lassa Fever<SMALL><SMALL>''[http://www.cdc.gov/NCIDOD/dvrd/spb/mnpages/lassaslides.htm]''</SMALL></SMALL>]] | |||
==Common Symptoms== | ==Common Symptoms== | ||
Revision as of 19:09, 9 June 2015
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Lassa fever Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Lassa fever history and symptoms On the Web |
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American Roentgen Ray Society Images of Lassa fever history and symptoms |
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Risk calculators and risk factors for Lassa fever history and symptoms |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]; Ammu Susheela, M.D. [3]
Synonyms and keywords: Lassa hemorrhagic fever; LHF
Overview
Lassa fever after an incubation period of six to twenty-one days, manifest as an acute illness with multiorgan involvement and patients present with gastrointestinal, neurological and pulmonary symptoms.
History
In 80% of cases the disease is inapparent, but in the remaining 20% it takes a complicated course. After an incubation period of six to twenty-one days, an acute illness with multiorgan involvement develops.[1]
Diagnosis
The current case definition for suspecting Lassa fever is as follows:[2]
| Unexplained fever at least 38oC or 100.4oF for one week or more |
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| And 1 of the following: |
| ▸ No response to standard treatment with the choice of regimen for most likely cause of fever (malaria, typhoid fever). |
| ▸ Readmitted within 3 weeks of inpatient care for an illness with fever. |
| And 1 of the following |
| ▸ Edema or bleeding. |
| ▸ Sore throat and retrosternal pain/vomiting. |
| ▸ Spontaneous abortion following fever. |
| ▸ Hearing loss following fever. |
- The following graph demonstrates the common and rare symptoms associated with Lassa fever:
Common Symptoms
- Because the symptoms of Lassa fever are so varied and nonspecific, clinical diagnosis is often difficult.
- Non-specific symptoms include the following.
- Fever-Almost 100%
- Headache- 85%
- Muscle fatigue- 80%
- Retrosternal pain (pain behind the chest wall)-80%
- Weakness-77%.
- Dizziness-75%
- Sore throat-70%
- Back pain
- Cough-70%
- Vomiting-65%
- Abdominal pain-60%
- Diarrhea-40%
- Mucosal bleeding-40%
Less Common Symptoms
The other symptoms arising from the affected organs are:
- Gastrointestinal tract.
- Vomiting blood-25%.
- Diarrhea (bloody)-25%.
- Constipation.
- Difficulty swallowing.
- Yellow discoloration of skin and sclera.
- Cardiovascular system.
- Facial or neck swelling.-15%
- High blood pressure.
- Low blood pressure.
- Palpitations.
- Respiratory tract.
- Nervous system.
- Tremor.
- Unilateral or bilateral hearing loss.
- Seizures.