What is a Headache?

There are pain receptors found in arteries and veins at the base of the brain and in the meninges (3 layers of connective tissues that enclose the brain).

The receptors may also be found in the muscles of the scalp, extra-cranial vessels, the neck and face, eyes, teeth and the paranasal sinuses.

The pain of a headache occurs through changes to the conditions of these receptors, which feed the brain information via chemical receptors.

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