Tension headaches are generally a complete pain in the, well, head. But, do you know the difference between a headache, a tension headache and a migraine headache? There are different treatments for each, according to some.

If you have a tension headache, you may experience a painful pressure across the forehead instead of to the sides of the head. Feel that sharp pain instead of gradual, consistent pain? That's a sign of a tension headache.

Poor posture, stress and even eyestrain can cause tension headaches, so a reminder here is prudent since so many of us work at a computer all day long: sit straight up (looking at your computer monitor), take visual breaks frequently and move during the day (don't sit in one place). If you still have a tension headache, I've found ibuprofen to work great, but other painkillers may do just as well (like acetaminophen).