In-depth

Causes

Cluster headache

Cluster headaches usually occur repeatedly on one side of your head and cause intense pain that feels like a stabbing sensation in your eye.

Symptoms

Abdominal pain

Find out what causes different types of abdominal pain.

Headache

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

Nausea and vomiting

Runny nose

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.

June 26, 2013