Don't ignore headache
You're sitting at your desk, working on a difficult task, when it suddenly feels as if a belt or vice is being tightened around the top of your head. Or you have periodic headaches that occur with nausea and increased sensitivity to light or sound. Maybe you are involved in a routine, non-stressful task when you're struck by head or neck pain.

Sound familiar? If so, you've suffered one of the many types of headache that can occur on its own or as part of another disease or health condition.
Read more: National Institute of Neurological Disorders and Stroke