In-depth

Symptoms

Dry skin

Extreme temperatures — hot or cold — can take a toll on your skin. Here's how to pamper and protect it.

Runny nose

Runny nose: What's causing your sniffles?

Tests and diagnosis

Chest X-rays

Even with today's high-tech medical devices, the basic chest X-ray remains an important tool in diagnosing various conditions. Here's a look at how it works.

May. 07, 2013