Writer's note: 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," on a regular basis. If there are terms you'd like to have defined, please leave a comment below.
When we're given migraine and headache information, whether from our doctor, a book, or an online article, we sometimes come across medical terms that can be confusing. While it's easy enough to substitute another word or a short phrase for the medical term, there are times when substituting doesn't quite convey the same meaning.
Unilateral is one of those terms. Unilateral means on one side. The term unilateral is seen frequently in discussions of Migraine attacks and cluster headaches, both of which tend to occur on one side of the head. You can read more about unilateral characteristics of and other symptoms of Migraines and cluster headaches in:
For more terms, see our Migraine Medical Terms Glossary Index.