Components of Pain - Pharmacology

There are two components of pain. These are the physical sensation of pain and the psychological component. The physical sensation of pain occurs when nerve endings are stimulated causing it to send an impulse along the nerve pathways to the brain, which transmits a pain response.

The psychological component is a person’s emotional response to pain based on a person’s pain threshold. The pain threshold is the level of nerve-ending stimulation that causes the person to have the feeling of unbearable pain.

For example, applying heat to the skin will cause the sensation of pain. However, the point beyond which pain becomes unbearable (pain tolerance) varies widely among individuals. Pain tolerance is also different for the same person depending on the circumstance in which sensation is detected. For example, a toothache might hurt more when you’re home than at work where you have a lot of distractions from the pain.


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