Myocarditis is an inflammation of the heart muscle. In this case, a previously healthy, 17-year-old adolescent with myocarditis after BNT162b2 mRNA vaccination was reported. He was admitted to the hospital with severe chest pain, changes in electrocardiography, and elevation in serum troponin level after fourth day of receiving first dose of vaccine. There was no coronary arterial disease in coronary angiogram. A diagnosis of vaccine-induced myocarditis was made, and supportive treatment was initiated.
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