In-depth

Causes

Ear infection (middle ear)

Ear infections are common in children. These bacterial or viral infections of the middle ear can cause mild to severe ear pain.

Symptoms

Headache

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

Tests and diagnosis

CT scan

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

MRI

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

Needle biopsy

Find out what to expect during a needle biopsy.

Positron emission tomography (PET) scan

A positron emission tomography (PET) scan is an imaging test that can detect changes within certain tissues or organs early, often before disease progresses.

X-ray

X-rays are a form of radiation that can make images of your bones and internal organs.

Treatments and drugs

Chemotherapy

Find out what to expect as you prepare for chemotherapy treatment.

Radiation therapy

Radiation therapy is a common means of treating many types of cancer. Find out what to expect during your radiation therapy treatment.

Sep. 08, 2012