10 of the Best Ways to Prevent a Headache

If you have seasonal headaches, the initial cause may be uncontrolled allergy symptoms. Experts explain that our sinuses are supposed to remain hollow cavities, but when allergies strike, they get overwhelmed with mucus, causing a headache.

What’s interesting is that both old-school allergy medications (such as Benadryl) and modern nasal decongestant sprays (such as Azelastine) can lead to headaches.