Diseases & Conditions

Acute Coronary Syndrome

Acute coronary syndrome occurs when blood supply to the heart is suddenly blocked. It is a medical emergency and chest pain is its main symptom.


Angina is chest pain that is caused by reduced blood flow to the heart.


An aneurysm is a bulging weakened area in the wall of a blood vessel. An aneurysm may occur in any blood vessel, but most often develops in an artery rather than a vein. An aneurysm can be characterized by its location, shape, and cause. An aneurysm can be located in many areas of the body, such as blood vessels of the brain (cerebral aneurysm), the aorta (the largest artery in the body), the neck,  intestines, the kidney, the spleen, and the vessels in the legs (iliac, femoral, and popliteal aneurysms). The most common location of an aneurysm is the aorta, which carries oxygenated blood from the heart to the body. 

Aortic Regurgitation

Aortic valve regurgitation is when the aortic valve leaks. The aortic valve is one of the heart’s 4 valves. It is on the left side of the heart and sits between the large blood vessel that sends blood to the body (aorta) and the lower chamber (ventricle). 


An arrhythmia is an abnormal heart rhythm.


Atherosclerosis is the hardening of the arteries due to plaque build-up inside the arteries.

Atrial Fibrillation

Atrial fibrillation (AFib) is a quivering, irregular heartbeat that may cause stroke and other heart-related complications.

Atrial Flutter

Atrial flutter is a type of arrhythmia that causes the heart to beat faster than normal. Atrial flutter can increase the risk for certain serious problems, such as stroke. Your healthcare provider will need to monitor and manage it.

Cardiac Arrest

Cardiac arrest occurs when the heart suddenly stops working. It is a medical emergency.


Cardiomyopathy is any disorder that affects the heart muscle, causing the heart to lose its ability to pump blood effectively. In some cases, the heart rhythm also becomes disturbed and leads to arrhythmias (irregular heartbeats). There may be multiple causes of cardiomyopathy, including viral infections and certain medications. 

Congenital Heart Disease

Congenital heart defects are heart conditions that occur due to heart abnormalities present at birth. These defects can affect any part of the heart and can often be treated with surgery.

Coronary Artery Disease

Coronary artery disease refers to a buildup of plaque in the arteries of the heart. It can lead to a heart attack.

Enlarged Heart

An enlarged heart (cardiomegaly) isn't a disease, but rather a symptom of another condition.

Heart Attack

A heart attack occurs when blood flow to the heart is dramatically reduced. This loss of blood flow can cause portions of the heart muscle to die.

Heart Block

A heart block occurs when the electrical signal that causes the heart to pump is interrupted or stopped.

Heart Failure

Heart failure occurs when the heart is significantly weakened so that it can no longer adequately supply the body's cells with oxygen. Fatigue and shortness of breath make everyday activities difficult.

Infective (bacterial) Endocarditis

Infective endocarditis is an infection of the lining of the heart. It may be caused by bacteria and can lead to complications such as heart valve destruction and congestive heart failure.

Inherited Rhythm Disorders (IRDs)

Inherited rhythm disorders (IRDs) cause irregular heartbeats. IRDs can be managed with medication and other treatments.

Kawasaki Disease

This condition causes inflammation in the artery walls throughout the body, including the heart. Signs include high fever and peeling skin, and it’s most common in children of Asian descent who are younger than 5.

Long Q-T Syndrome

Long QT syndrome (LQTS) is a heart rhythm disorder that may cause rapid, chaotic heartbeats. These rapid heartbeats may lead to sudden fainting, seizure or death.

Marfan Sydnrome

This inherited disorder affects the fibers that support and anchor your organs, called connective tissue. Marfan syndrome most commonly affects the heart, eyes, blood vessels and skeleton. The condition can be life-threatening if the heart or blood vessels are affected.


Pericarditis is inflammation of the thin sac (membrane) that surrounds the heart, the pericardium. The pericardium holds the heart in place and helps it work properly. There is a small amount of fluid between the inner and outer layers of the pericardium. This fluid keeps the layers from rubbing as the heart moves to pump blood.

Rheumatic Heart Disease

Also called RHD, rheumatic heart disease is a chronic heart condition caused by rheumatic fever, which is caused by a strep infection. Treating strep with antibiotics can prevent rheumatic fever.


Ventricular tachycardia (VT) is an abnormal, fast heart rate. It begins in your heart’s lower chambers, called the ventricles. VT is defined as 3 or more heartbeats in a row, at a rate of more than 120 beats a minute. If VT lasts for more than a few seconds at a time, it can become life-threatening. The rapid heartbeat does not give your heart enough time to fill with blood before it contracts again. This can affect blood flow to the rest of your body.  


Thrombosis occurs when clots block blood vessels. Veins carry blood from the body back into the heart. Venous thrombosis occurs when a blood clot blocks one of those veins. Arteries carry oxygenated blood away from the heart to the body. Arterial thrombosis is when the blood clot blocks an artery. 

Valve Disorders

Valve disorders involve problems with the valves that regulate blood flow throughout the heart. In general, valves either harden or leak.

Your next step: Connect with a physician in your area.

Call (877) 554-3258 or use our find a physician tool to be connected to a ​physician who can answer your questions. You can also read more about diseases and conditions in our health library.