Condition
Encephalitis, St. Louis
Neurology
Overview
A viral encephalitis caused by the St. Louis encephalitis virus (ENCEPHALITIS VIRUS, ST. LOUIS), a FLAVIVIRUS. It is transmitted to humans and other vertebrates primarily by mosquitoes of the genus CULEX. The primary animal vectors are wild birds and the disorder is endemic to the midwestern and southeastern United States. Infections may be limited to an influenza-like illness or present as an ASEPTIC MENINGITIS or ENCEPHALITIS. Clinical manifestations of the encephalitic presentation may include SEIZURES, lethargy, MYOCLONUS, focal neurologic signs, COMA, and DEATH. (From Adams et al., Principles of Neurology, 6th ed, p750)
This information is general and should not be treated as medical advice. Always speak directly with a qualified healthcare professional before making decisions about treatment, diagnosis, procedures, medicines or care.
Quick facts about Encephalitis, St. Louis
- Topic type
- Condition
- Category
- Neurology
- MeSH classification
- C01.207.245.340.300.550|C01.207.399.750.300.550|C01.920.313.156.350|C01.920.852.500.350|C01.925.081.343.350|C01.925.182.525.300.300|C01.925.782.310.350|C01.925.782.350.250.450|C10.228.140.430.520.750.300.550|C10.228.228.245.340.300.550|C10.228.228.399.750.300.550|C10.586.250.520.750.300.550
Preparing for an appointment about Encephalitis, St. Louis
If you are speaking with a healthcare professional about Encephalitis, St. Louis, it can help to prepare a few details in advance.
- Write down your symptoms and when they started.
- Bring details of any medicines, supplements or previous treatments.
- Ask what tests or assessments may be needed.
- Ask what treatment or management options may be suitable.
- Ask when you should seek urgent medical help or follow-up care.
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Source: Medical Subject Headings (MeSH), produced by the U.S. National Library of Medicine. EuroCareFinder is not endorsed by the National Library of Medicine. MeSH version: 2026.