In-depth

CT scan

A CT scan is an imaging test that uses X-rays to produce detailed images of the inside of your body.

Diarrhea

Here's information about common causes of diarrhea and when to see your doctor.

Erectile dysfunction

Erectile dysfunction (ED) can be the result of physical or psychological causes or both. Discover what causes ED and what treatments are available.

Fatigue

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

Goiter

Goiter is an enlargement of the thyroid gland due to a variety of causes. The condition can cause difficulty swallowing or breathing.

Heart arrhythmias

Hyperthyroidism

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

MRI

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

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.

Jul. 01, 2014

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