The noises produced by closure of the heart valves.
Emotional stress can sometimes cause a temporary change in the heart sounds.
This list is not all inclusive, and the causes are not presented in order of likelihood. The causes of this symptom can include unlikely diseases and medications. Furthermore, the causes may vary based on age and gender of the affected person, as well as on the specific characteristics of the symptom such as location, quality, time course, aggravating factors, relieving factors, and associated complaints. Use the Symptom Analysis option to explore the possible explanations for abnormal heart sounds, occurring alone or in combination with other problems. They can also be evaluated with an echocardiogram or other tests.