Possible causes of Heart murmur (Abnormal heart sound)

16 conditions can cause this symptom. Most common are listed first.

• Anemia (low red blood cell count) Common Pediatric
• Endocarditis (heart valve infection) Common Urgent Pediatric
• Fever (elevated temperature) Common
• Marfan syndrome Common Pediatric
• Mitral valve prolapse Common
• Pregnancy Common
• Valvular heart disease Common Pediatric
• Aortic regurgitation (aortic insufficiency)
• Aortic valve stenosis (heart valve defect)
• Congenital heart disease (heart defect at birth) Urgent Pediatric
• Hyperthyroid (elevated thyroid hormone) Urgent
• Hypertrophic cardiomyopathy (heart disease) Urgent Pediatric
• Mitral regurgitation
• Mitral stenosis
• Myocardial infarction (heart attack) Urgent
• Rheumatic fever Urgent Pediatric