Can heart disease cause fever?

The heart is the central organ of the body. When disease affects the heart, it not only causes numerous uncomfortable symptoms but may also impact life expectancy. Consequently, people often grow pale at the mere mention of heart disease. Myocardial ischemia is a common condition that occurs when blood perfusion to the heart decreases, resulting in insufficient blood and oxygen supply to the myocardium. But can heart disease cause fever?

Can Heart Disease Cause Fever?

Yes—certain cardiac conditions can lead to fever, including acute myocarditis, infective endocarditis, and acute pericarditis. These diseases are primarily caused by infectious agents triggering inflammatory injury to the myocardium or other cardiac structures. Due to the infection, the body mounts a pronounced inflammatory response, manifesting as elevated body temperature and fever. Such infections may be caused by microorganisms including bacteria and fungi. For instance, infection of the heart valves (infective endocarditis) can result in high fever, fatigue, and generalized malaise. Acute pericarditis is an acute inflammatory disorder affecting both the visceral and parietal layers of the pericardium, which likewise triggers systemic inflammation and fever.

Fever can indeed occur in various forms of heart disease. Clinically, patients with viral myocarditis often experience an upper respiratory tract infection within the two weeks preceding onset; fever may also arise secondary to gastrointestinal infections. Patients with acute myocardial infarction may develop low-grade to moderate fever. Moreover, other types of heart disease may present with fever when complicated by concurrent infection—thus, heart disease can indeed be associated with infection and fever.

Patients are advised to maintain good personal hygiene, follow a balanced diet, and avoid spicy or irritating foods. Regular outdoor physical activity is encouraged to strengthen immunity. We hope this information proves helpful.