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Definition
By Mayo Clinic staffSerotonin syndrome occurs when you take medications that cause high levels of the chemical serotonin to accumulate in your body. It can occur when you increase the dose of such a drug or add a new drug to the ones you take already. Certain illicit drugs and dietary supplements also can cause serotonin syndrome.
Serotonin is a chemical produced by your body and is needed for your nerve cells and brain to function. But too much serotonin causes problems. Symptoms of serotonin syndrome range from shivering and diarrhea to severe symptoms such as muscle rigidity, fever and seizures. Severe serotonin syndrome can be fatal if it isn't treated. Serotonin syndrome usually goes away within a day of stopping the medications causing symptoms and taking drugs that block serotonin, if needed.
- Moore DP. Serotonin syndrome. In: Moore DP. Moore & Jefferson: Handbook of Medical Psychiatry. 2nd ed. Philadelphia Pa.: Mosby; 2004. http://www.mdconsult.com/das/book/body/113440701-3/0/1243/148.html#4-u1.0-B0-323-02911-6..50148-2_1373. Accessed Dec. 10, 2008.
- Bilden EF, et al. Antidepressants. In: Marx JA: Rosen's Emergency Medicine: Concepts and Clinical Practice. 6th ed. Philadelphia Pa.: Elsevier; 2006. http://www.mdconsult.com/das/book/body/113410207-5/0/1365/463.html#4-u1.0-B0-323-02845-4..50154-2--cesec45_7826. Accessed Dec. 10, 2008.
- Boyer EW, et al. Serotonin syndrome. New England Journal of Medicine. 2005;352:1112.
- Combined use of 5-hydroxytryptamine receptor agonists (triptans), selective serotonin reuptake inhibitors (SSRIs) or selective serotonin/norepinephrine reuptake inhibitors (SNRIs) may result in life-threatening serotonin syndrome. US Food and Drug Administration. http://www.fda.gov/Cder/Drug/advisory/SSRI_SS200607.htm. Accessed Dec. 10, 2008.
- Zeping H, et al. Herb-drug interactions. Drugs. 2005;65:1239.
- Chyka PA, et al. Dextromethorphan poisoning: An evidence-based consensus guideline for out-of-hospital management. Clinical Toxicology. 2007;45:662.
- Argwal P. Serotonin syndrome. In: Ferri's Clinical Advisor 2009. Philadelphia, Pa.: Mosby Elsevier; 2009. http://www.mdconsult.com/das/book/body/113440701-3/0/1701/541.html#4-u1.0-B978-0-323-04134-8..50022-7--subchapter15_11410. Accessed Dec. 10, 2008
