A headache is a pain in the head, neck or face that is often described as a sensation of pressure that varies in location, frequency and severity, according to the National Institutes of Health.

4. Full Headache: Improve Blood Circulation. What exactly is a full headache? The American Migraine Foundation explains that this type of headache is often associated with tension-type headaches or ...

Headaches can often feel similar but their causes can differ from person to person Identifying an allergy-related headache can help you distinguish it from other common types Here’s what to look for ...