[caption id="attachment_2735" align="aligncenter" width="600"] A recent study indicates that aspirin taken with acetaminophen and caffeine is more effective than aspirin alone.[/caption] Tension headaches are the most common form of headaches and affect more than 20% of the population. Frequently, tension headache sufferers turn to over-the-counter medications for relief. A recent study indicates that medication containing a combination of acetylsalicylic acid, (aspirin), acetaminophen, and caffeine is more effective than acetaminophen alone.

Glaucoma is a disease of the eyes that can cause headaches. Fluid in the eye does not drain properly, or there is over-production of fluid, which causes increased pressure within the eye. Prolonged increased pressure can lead to visual loss if not corrected.