What Causes Myocarditis?

Many cases of myocarditis are caused by bacterial infections, and some patients also have underlying diseases. Patients with myocarditis commonly experience various uncomfortable symptoms, including palpitations, headache, dizziness, and joint pain. To alleviate these symptoms, it is essential to understand the underlying causes—so what causes myocarditis?

What Causes Myocarditis?

Most cases of myocarditis are triggered by viral infections, often following common colds or occurring after excessive physical exertion coupled with a cold. Many patients develop myocarditis after prolonged exposure to air conditioning during summer or getting caught in the rain without an umbrella. Others may take cold showers immediately after playing basketball in rainy weather—hence, myocarditis predominantly affects young adults. Clinically, myocarditis is a common inflammatory disease of the myocardium, with etiologies encompassing both infectious and non-infectious factors.

Prevention of myocarditis includes improving sleep quality and maintaining emotional stability. Sleep medicine research shows that during sleep, the body produces a sleep-promoting substance called muramyl dipeptide (a sleep factor), which enhances white blood cell production, boosts macrophage activity, and supports hepatic detoxification—thereby helping eliminate invading bacteria and viruses. Maintaining an optimistic outlook, coping constructively with stress, viewing stress as a natural part of life, learning appropriate stress-reduction techniques, and safeguarding mental well-being are all crucial.

Patients with myocarditis should prioritize rest and avoid staying up late. Bed rest is recommended to prevent strenuous physical activity or emotional agitation—both of which can increase myocardial oxygen demand. We hope this information proves helpful to you.