When we're looking at Migraine and headache information, whether it's from our doctor, a book, or an online article, we sometimes come across medical terms that can be confusing.

Sometimes, it's easy enough to substitute another word or a short phrase for the medical term. At other times, substituting just doesn't convey quite the same meaning or takes more than a few words.

Some of you have expressed an interest in learning more of the medical terminology that comes up when discussing Migraine disease and other headache disorders. So, I'll be posting a "term of the day," probably a couple of times a week. If there are terms you'd like to have defined, please leave a comment to let me know what it is.

Today's term: Primary Headache.

Primary Headache: a headache not caused by another illness or disorder.

Most of the headache disorders we discuss are considered primary headaches. This includes Migraines.

We have a great deal of information about primary headache disorders, including:

• Abdominal Migraine - The Basics
• Acephalgic or Silent Migraine - The Basics
• Basilar-Type Migraine - the Basics
• Chronic Daily Headache - The Basics
• Cluster Headaches - The Basics
• Hemicrania Continua - The Basics
• Hemiplegic Migraine - The Basics
• Hypnic Headaches - The Basics
• Ice Pick Headaches - The Basics
• Migraine - What is It?
• Migraine With Aura - the Basics
• Migraine Without Aura - the Basics
• New Daily Persistent Headache - The Basics
• Paroxysmal Hemicrania - The Basics
• Primary Exertional Headache - The Basics
• Retinal Migraine - The Basics
• Status Migrainous - The Basics
• Tension-Type Headaches - The Basics

For more terms, see our Migraine and Headache Glossary .