Pain

Definition

Pain is a complex sensory and emotional experience that is typically associated with tissue damage. It serves as a protective mechanism to alert the body to potential harm or injury.

Related terms

Nociceptors:

Specialized nerve endings that detect painful stimuli. They send signals to the brain, triggering the sensation of pain.

Gate Control Theory:

This theory suggests that there are "gates" in the spinal cord that can open or close, modulating the perception of pain. For example, rubbing a bumped knee may help alleviate some pain by activating other sensory pathways.

Endorphins:

These are natural painkillers produced by our bodies. They bind to opioid receptors in the brain, reducing the perception of pain and creating feelings of pleasure or euphoria.