Harmless (innocent) heart murmurs usually don't cause any other symptoms. Symptoms of worrisome heart murmurs depend on the cause. Heart murmur symptoms may include:  Blue or gray fingernails or lips Chest pain Cough that doesn't go away Dizziness Swollen liver Swollen neck veins Fainting Heavy sweating with little or no activity In infants, poor appetite and lack of growth Shortness of breath Swelling or sudden weight gain 
harmless (innocent) heart murmurs don't cause symptoms  symptoms worrisome heart murmurs depend cause  heart murmur symptoms may include:  blue gray fingernails lips chest pain cough doesn't away dizziness swollen liver swollen neck veins fainting heavy sweating little activity infants  poor appetite lack growth shortness breath swelling sudden weight gain 
heart murmurs