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

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.

Shortness of breath

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


Tests and diagnosis

Cardiac catheterization

Cardiac catheterization is used as a test for some heart conditions and as a procedure to treat some types of heart disease. Find out more.

Chest X-rays

CT scan



Genetic testing

Genetic testing is used to detect altered genes that may cause illness or disease. Although genetic testing can offer important health information, it has limitations.


MRI uses a magnetic field and radio waves to create detailed images of the organs and tissues within your body.

Stress test

Treatments and drugs

Heart transplant

Implantable cardioverter-defibrillator

Ventricular assist devices

Having a ventricular assist device (VAD) can help you survive while waiting for a heart transplant, or can serve as a long-term treatment for heart failure. Find out more.

Aug. 19, 2014