In-depth

Cold hands

Cold hands can have many causes aside from cold weather. Find out more about poor circulation that can cause cold hands.

Dizziness

Dizziness has many possible causes. The cause of dizziness may be simple, or dizziness may be a sign of a more serious disorder.

Fatigue

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

Ferritin test

A ferritin test can be used to detect iron deficiency anemia. It can also help to detect conditions associated with iron overload, such as hemochromatosis.

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Hematocrit test

A hematocrit test shows what proportion of your blood is made up of red blood cells. Results may help your doctor diagnose certain diseases.

Iron deficiency in children

Wonder if your child is getting enough iron? Get the facts about iron deficiency in children.

Shortness of breath

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

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.

Ultrasound

Ultrasound imaging uses high-frequency sound waves to create images of structures in your body.

Upper endoscopy

Find out what to expect during your endoscopy exam.

Jan. 02, 2014

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