Myocarditis is an inflammation of the heart’s muscle. It is rare. Myocarditis can occur with no symptoms and remain undiagnosed.
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In most children, the condition is often caused by a viral infection. Other potential causes include:
Sometimes the cause cannot be found.
Some children may have no symptoms. Those who do may have a variety symptoms that can appear slowly or come on suddenly. Children older than 2 years old may have fewer symptoms than babies.
Symptoms may include:
You will be asked about your child’s symptoms and medical history. A physical exam will be done. There is no specific test for myocarditis. The diagnosis can usually be made based on the history, physical exam, and test results.
Your child's bodily fluids and tissues may be tested. This can be done with:
Images may be taken of your child's bodily structures. This can be done with:
The electrical activity of your child's heart may be measured. This can be done with an electrocardiogram (ECG) .
Your child will need bed rest. Physical activity should be avoided. Myocarditis may be relieved by treating the underlying cause if possible:
Medication may also be given to support the heart function and remove extra fluid from the lungs or other body tissues.
American Heart Association
National Heart, Lung, and Blood Institute
Canadian Cardiovascular Society
Myocarditis. Seattle Children's Hospital website. Available at: http://www.seattlechildrens.org/medical-conditions/heart-blood-conditions/myocarditis/#. Accessed November 5, 2014
Myocarditis.Children's Hospital of Philadelphia website. Available at: http://www.chop.edu/conditions-diseases/myocarditis/about#.VFpiuWd3eM0. Updated September 1, 2013. Accessed November 5, 2014.
Myocarditis. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T114167/Myocarditis. Updated December 8, 2015. Accessed September 29, 2016.
Last reviewed December 2015 by Kari Kassir, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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