In-depth

Prevention

Caffeine: How much is too much?

Quitting smoking

When you're trying to quit smoking, cravings can be powerful. Use these 10 strategies to help resist tobacco cravings.

Symptoms

Headache

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

Nausea and vomiting

Tests and diagnosis

CT scan

Lumbar puncture (spinal tap)

MRI

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

Sept. 01, 2015