The heart is a muscle about the size of your fist that pumps blood around the body. When the heart is functioning properly, it has a specific rhythm controlled by a mass of specialized ...

What is a heart murmur? They can be harmless or signal a more serious heart problem. These are the heart murmur symptoms to ...

W hen your heart “skips a beat” it may feel like a brief flutter or flip-flop in your chest. A scary symptom that is usually ...

Some other lung-related conditions known to cause chest discomfort include: Pneumonia: This infection inflames the air sacs ...