In-depth

Find out about this rare cause of heart attack in young, healthy people.

Aortic valve regurgitation

Aortic valve stenosis

Atrial septal defect

Atrial septal defect (ASD) is an abnormal opening between the heart's upper pumping chambers. It's common and readily treated.

Coping with job stress

High stress levels at work can steal the joy from life. Learn how to turn the tables on job stress, starting today.

Diabetic hypoglycemia

Diabetic hypoglycemia — Comprehensive overview covers causes, symptoms and treatment of low blood sugar.

Dilated cardiomyopathy

Dizziness

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

Dumping syndrome

Echocardiogram

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

Eisenmenger syndrome

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

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.

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.

Hyperthyroidism

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

Hypertrophic cardiomyopathy

Hypertrophic cardiomyopathy is a genetic disorder in which heart muscle becomes abnormally thick. It's the most common cause of sudden cardiac death in young people.

Hypoglycemia

Hypoglycemia occurs when you have an abnormally low level of blood sugar (glucose) — your body's main energy source. Various underlying conditions can cause

Intermittent explosive disorder

Intermittent explosive disorder involves aggressive, violent behavior that's out of proportion to what triggered the behavior. Episodes may be separated by long periods of time.

Left ventricular hypertrophy

Left ventricular hypertrophy, thickening of the wall of your heart's main pumping chamber, increases your risk of cardiovascular diseases.

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.

Mitral valve regurgitation

Mitral valve stenosis

Pulmonary hypertension

High blood pressure affecting only the arteries in your lungs is known as pulmonary hypertension. Discover the symptoms, risk factors and treatment for this condition.

Pulmonary valve stenosis

Pulmonary valve stenosis is a narrowing of the valve that controls blood flow from your heart to your lungs. It's usually present at birth.

Relaxation techniques

Rheumatic fever

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

Shortness of breath

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

Sudden cardiac arrest

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

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.

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.

Wolff-Parkinson-White syndrome

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

Apr. 02, 2014

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