No: Headaches are not due to allergy. People are prone to migraine headaches which can be triggered by many triggers such as certain foods , stress and many medications and more.
Answered 1/5/2016
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Perhaps: Significant nasal congestion can lead to headaches and even trigger migraines (some neurologists would disagree with this link but I have observed this in many of my patients). Saline spray may reduce the nasal congestion slightly by rinsing away the allergen and chemical mediators causing the allergic reaction if your problem is indeed allergen. Probably not enough for most people.
Answered 10/23/2017
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