Acute coronary syndrome

Acute coronary syndrome occurs when there isn't enough blood flowing through your heart. It can be felt as chest pain (angina) or a heart attack.


Anorexia nervosa

Aortic valve regurgitation

Aortic valve stenosis


Arteriosclerosis / atherosclerosis

Atrial fibrillation

Atrial flutter

Atrial septal defect


Broken heart syndrome

Broken heart syndrome, also called stress cardiomyopathy, mimics a heart attack. Discover how stress could trigger this puzzling condition.

Bulimia nervosa

Bundle branch block

Cardiogenic shock


Chagas disease

Chest pain

Coarctation of the aorta

Congenital heart defects in children

Congenital heart disease in adults

Diabetic ketoacidosis

Dilated cardiomyopathy

Dressler's syndrome

Ebstein's anomaly

Ebstein's anomaly is a rare heart defect. Some people may not have any symptoms, but others may need treatment, including surgery.

Eisenmenger syndrome

Eisenmenger syndrome, a complication of congenital heart defects, can be life-threatening if not properly treated. Find out more.


Enlarged heart

Enlarged heart is often a sign of a serious heart condition. Find out causes and treatments for enlarged heart.

Heart arrhythmias

Heart attack

Heart disease

Heart disease, usually thought of as blockages in the arteries that can cause a heart attack, can describe any medical condition affecting your heart.

Heart failure

Heart murmurs

Heart palpitations

Heart palpitations are skipped, fluttering or racing heartbeats that aren't usually a symptom of a serious heart problem. Discover the causes and symptoms of this condition.



Kawasaki disease

Kawasaki disease — the leading cause of acquired coronary disease in children — causes artery wall inflammation throughout the body. It affects children younger than age 5.

Left ventricular hypertrophy

Long QT syndrome

Low blood pressure (hypotension)

Low blood pressure (hypotension) can be a sign of good health or of a life-threatening condition. Find out more about hypotension's causes and treatment options.

Mitral valve disease

Mitral valve prolapse

Mitral valve prolapse occurs when the valve separating two of your heart's chambers malfunctions. The disorder usually isn't serious and often doesn't require surgical treatment.

Mitral valve stenosis

Multiple system atrophy (MSA)

Myocardial ischemia


Noonan syndrome

Noonan syndrome is caused by a mutation in one of the genes responsible for normal development in many parts of the body, including the heart.

Orthostatic hypotension (postural hypotension)

Orthostatic hypotension (postural hypotension) is a form of low blood pressure that occurs when you stand up.

Panic attacks and panic disorder

Patent ductus arteriosus (PDA)

Pectus excavatum

Pericardial effusion

Pericardial effusion, the accumulation of excess fluid in the sac-like structure around the heart, can decrease heart function and can be life-threatening.


Premature ventricular contractions

Pulmonary atresia

Pulmonary atresia is a heart defect that you're born with. Fortunately, treatment soon after birth and ongoing throughout childhood and adulthood greatly improve your prognosis.

Pulmonary edema

Pulmonary valve stenosis

Rheumatic fever

Rheumatic fever, an inflammatory disease triggered by untreated or poorly treated strep throat, can cause permanent heart damage.

Secondary hypertension

Secondary hypertension is a type of high blood pressure that's caused by another medical condition. Prompt treatment is often necessary to avoid complications.

Sick sinus syndrome

Sudden cardiac arrest

Sudden cardiac arrest is a medical emergency. Rapid treatment improves your chances of survival.


Tachycardia, a rapid heart rate, is caused by an abnormality in your heart's electrical impulses. Tachycardia can cause serious complications, including sudden cardiac arrest.

Tetralogy of Fallot

Transposition of the great arteries

Tuberous sclerosis

Vasovagal syncope

Vasovagal syncope (fainting) is a sudden and brief loss of consciousness that occurs when the blood flow to your brain is markedly reduced.

Ventricular fibrillation

Ventricular septal defect

Ventricular tachycardia

Wolff-Parkinson-White syndrome

An abnormal electrical pathway in the heart causes the rapid heart rate of Wolff-Parkinson-White syndrome.

Sept. 12, 2015