In-depth

Causes

Headaches and hormones

Headaches are a fact of life for many women. Here's why — and what you can do about it.

Toxoplasmosis

Toxoplasmosis is an infection caused by a parasite. It doesn't make most people ill, but infants and people with HIV/AIDS are at risk of complications.

Risk factors

High blood pressure (hypertension)

Uncontrolled high blood pressure can lead to various life-threatening conditions. But it's easily detected — and you can work with your doctor to control it.

Migraine

A migraine isn't an ordinary headache. In addition to severe head pain, it can cause nausea, vomiting, and extreme sensitivity to light and sound.

Stress symptoms

Aches and pains, irritability, and crying spells may have an unexpected source — stress. Recognize these and other signs and symptoms so that you can take action.

Symptoms

Headache types

Do you get migraines, cluster headaches or tension headaches? Take a look to find out.

Nausea and vomiting

Sick to your stomach? Nausea and vomiting usually pass quickly but sometimes result from long-term or serious conditions.

Runny nose

Runny nose: What's causing your sniffles?

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.

EEG (electroencephalogram)

Here's what to expect if you're scheduled for an EEG (electroencephalogram) — a common diagnostic test for many brain disorders, especially epilepsy.

MRI

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

Urinalysis

Urinalysis can be used to assess your overall health, detect a wide range of disorders, or monitor a medical condition or treatment.

Treatments and drugs

Feeling overwhelmed? Take a break

Have you had a good laugh today?

Headache symptoms, treatments

There's no one-size-fits-all approach for headaches. If you're ready to learn more about specific types of headaches, start here.

Headaches 101: Know your type

Stress and headaches: Stop the cycle

Mar. 15, 2012