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 identify the underlying cause. So, what causes myocarditis?

What Causes Myocarditis?

Myocarditis may result from infections, endocrine or metabolic disorders, and other factors. Viral causes include Coxsackievirus, echovirus, influenza virus, adenovirus, and hepatitis viruses. Bacterial agents include Corynebacterium diphtheriae and Streptococcus species. Other pathogens such as fungi, Rickettsia, spirochetes, and protozoa can also cause myocarditis—among which viral myocarditis is the most common. Endocrine and metabolic disturbances may likewise trigger myocarditis, as can excessive radiation exposure to the cardiac region. Additionally, certain systemic diseases—including systemic lupus erythematosus and rheumatoid arthritis—are associated with myocarditis development.

The optimal treatment strategy for myocarditis targets both infection control and myocardial inflammation reduction. For primary viral infections, interferon and interferon inducers are recommended for both prevention and treatment. Traditional Chinese herbal medicines—such as Isatis root (Ban Lan Gen), Folium Isatidis (Da Qing Ye), and Forsythia suspensa (Lian Qiao)—also demonstrate antiviral effects. Patients should prioritize rest; critically ill individuals require strict bed rest. A diet consisting of easily digestible foods rich in vitamins and protein is advised. Heart failure must be promptly managed; digitalis should be used cautiously, starting with low doses. Angiotensin-converting enzyme (ACE) inhibitors, vasodilators, and diuretics are also indicated. For patients experiencing frequent premature beats or rapid arrhythmias, antiarrhythmic medications may be prescribed.

Patients are advised to ensure adequate rest, maintain a light diet, adhere strictly to prescribed medications, and undergo close clinical monitoring. We hope this information proves helpful to you.