Allergies can cause headaches for many people. Our air has become polluted and this has increased the sufferers of allergies, which has increased headaches, also.

A recent poll from the allergy section on about.com revealed these results on personal causes of headaches:

Foods – 12%
Pollens – 14%
Scented products – 18%
Secondhand smoke – $13%
Sinuses – 17%
Other – 14%
If you see a cause of your headaches listed above, you may not just be a headache sufferer, but an allergy sufferer with headache symptoms.

Besides allergies, other headaches causes are:

Dehydration
Lack of Sleep
Stress & Tension
Eye Strain
Non-ergonomic correct positions
Lack of exercise
Lack of oxygen