“The brain does not feel pain”

It might seem counterintuitive, given that our head is often the site of intense discomfort, but the brain itself is actually devoid of pain receptors. This anatomical peculiarity is the basis for the common misconception that the brain can feel pain. Unlike most other parts of the body, which are equipped with specialized nerve endings called nociceptors that detect damaging stimuli, the brain tissue itself lacks these crucial sensors.

This scientific reality has profound implications, particularly in medicine. Neurosurgeons are sometimes able to perform delicate brain operations on patients who are awake and conscious, precisely because the brain tissue itself registers no pain. While patients may feel pressure or other sensations from the scalp, skull, or surrounding membranes, they do not experience pain from the manipulation of the brain itself. This remarkable fact allows surgeons to monitor a patient's cognitive functions during surgery, reducing the risk of damage to critical areas.

The reason people commonly believe the brain feels pain stems from the experience of headaches and head injuries. When we experience a headache, the pain isn't originating from the brain tissue. Instead, the discomfort arises from the surrounding structures: the meninges (the protective layers covering the brain and spinal cord), blood vessels around the brain, muscles in the head and neck, and nerves in the scalp. These tissues are rich in nociceptors and are perfectly capable of signaling pain, leading us to incorrectly attribute the sensation directly to the brain itself.