Tension headaches squeeze your head like a stress ball, making it difficult to focus and often affecting your mood, as well. After several hours, and perhaps some medication, the headache finally subsides.
About 90 percent of Americans experience a tension headache during their lifetime.
These headaches generally feel like the head is being squeezed in a vise, or as if pressure is being applied uniformly around the head. They can last anywhere from 4 to 72 hours.
Episodic tension headaches come and go sporadically. Chronic tension headaches occur regularly, for weeks or months at a time.