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Some uncommon triggers that cause headaches

There are some run-of-the-mill reasons why we get headaches. Stress, eyestrain or hormonal shifts are all common causes.But there are some headache triggers that aren't quite as common and lead to that gnawing pain.

Sunday - 12/01/2013, 10:36am EST

Tags: CNNhealth.com, veronica robinson, headache triggers, Headaches