In-depth

Amniotic fluid embolism

Amniotic fluid embolism — Overview covers definition, symptoms and treatment of this pregnancy or post-pregnancy condition.

Anorexia nervosa

Find out what's behind this life-threatening eating disorder and how to treat it.

Aortic valve regurgitation

Aplastic anemia

Aplastic anemia occurs when your bone marrow stops producing enough new blood cells. It's a serious problem, but treatments are available.

Atrioventricular canal defect

Atrioventricular canal defect is a congenital heart defect involving a hole in the center of the heart and abnormal valves between the heart's chambers.

Broken heart syndrome

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

Cardiac ablation

Cardiomyopathy

Cardiomyopathy is a heart muscle disease. Treatment options depend on what type of cardiomyopathy you have.

Cardioversion

Cholera

Cholera causes severe diarrhea and can kill in a matter of hours, yet can be easily treated with oral or intravenous fluids.

Churg-Strauss syndrome

Churg-Strauss syndrome is a rare disorder marked by blood vessel inflammation that affects organs throughout the body. Asthma is the most common sign.

Coronary bypass surgery

Coronary bypass surgery is a procedure to treat blockage of blood to the heart muscle.

Diabetic coma

A diabetic coma is a medical emergency. Minimize the effects with prompt treatment.

Dizziness

Dizziness is one of the most common health concerns. However, few cases of dizziness are due to serious conditions.

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.

Echocardiogram

Echocardiogram allows your doctor to see your heart in motion. Here's what you need to know about the test.

Electrocardiogram

An electrocardiogram (ECG or EKG) is a test that provides valuable clues about your heart health. Here's what you need to know about the test.

Enlarged heart

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

Fatigue

Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.

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 failure means your heart can't efficiently pump blood throughout your body. Medications, and sometimes devices or surgery, can help you manage this condition.

Hyperthyroidism

Hyperthyroidism occurs when your thyroid gland produces too much of the hormone thyroxine — speeding up your metabolism and sometimes leading to serious complications.

Implantable cardioverter-defibrillator

Implantable cardioverter-defibrillators (ICDs) can control abnormal, life-threatening heart rhythms and prevent cardiac arrest.

 

Long QT syndrome

Long QT syndrome is an electrical disturbance that can cause sudden, rapid heart rates. It can be genetic or a side effect of medication.

Lyme disease

Lyme disease is a tick-borne illness. Left untreated, it can lead to serious and lingering complications — including arthritis.

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

Myocarditis

Myocarditis is a disease in which the heart muscle becomes inflamed and swollen, often as the result of an infection.

Pacemaker

A pacemaker can correct a heartbeat that's too slow. Find out the risks, results and recovery time of the procedure to implant a pacemaker.

Pituitary tumors

Pituitary tumors are abnormal growths in the pituitary gland in the brain. Most are noncancerous (benign). Some may cause overproduction of hormones and associated problems.

Premature ventricular contractions

Prescription drug abuse

Prescription drug abuse is a growing problem, especially in teens. Tips on prevention and recognizing symptoms.

Rett syndrome

Parenting a child with Rett syndrome can be challenging. Here's what to expect and steps you can take to help your child.

Shortness of breath

Shortness of breath can be frightening. Most of the time, a heart or lung condition is the cause.

Snoring

Snoring may be just a nighttime annoyance, or it may indicate a more serious health condition. It can also disrupt your life and relationships.

Stress test

A stress test is used to diagnose coronary artery disease and heart arrhythmias, as well as guide treatment of heart disorders.

Tachycardia

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.

Thyroid nodules

Most thyroid nodules — lumps in the thyroid gland — cause no problems. But nodules that affect swallowing, produce excess thyroid hormone or are malignant require treatment.

Tilt table test

A tilt table test is used to investigate the cause of fainting (syncope).

Tricuspid atresia

A heart with tricuspid atresia doesn't have a tricuspid valve. This heart defect prevents blood flow from the right atrium to the right ventricle.

Jul. 31, 2014

You Are ... The Campaign for Mayo Clinic

Mayo Clinic is a not-for-profit organization. Make a difference today.