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The brain in itself is not sensitive to pain, because it lacks nociceptors. Several areas of the head can hurt, including a network of nerves which extend over the scalp and certain nerves in the face, mouth, and throat. The meninges and the blood vessels do have pain perception. Headaches often result from traction to or irritation of the meninges and blood vessels. The membrane surrounding the brain and spinal cord, called the dura mater, is innervated with nociceptors. Stimulation of these dural nociceptors is thought to be involved in producing headaches. Similarly the muscles of the head may be sensitive to pain.

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11y ago

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