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:
- Flu-like complaints, including fever, fatigue, muscle or joint pain, vomiting, diarrhea , and weakness
- Rapid or irregular heart rate
- Chest pain
- Trouble breathing
- Loss of consciousness
- Swelling of the face, feet, or legs
- Abdominal pain
- Decreased urine output
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:
- Blood tests
Images may be taken of your child's bodily structures. This can be done with:
- Chest x-ray
- MRI scan
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:
- Antibiotics may be given for a bacterial infection
- Antiviral agents may be given if a virus in involved
- Immunosuppressive or immunoglobulin therapy may be used if an autoimmune disorder is involved
Medication may also be given to support the heart function and remove extra fluid from the lungs or other body tissues.
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
Edits to original content made by Denver Health.
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American Heart Association http://www.heart.org
National Heart, Lung, and Blood Institute http://www.nhlbi.nih.gov
Canadian Cardiovascular Society http://www.ccs.ca
Health Canada http://www.hc-sc.gc.ca
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.