What Are Nociceptors?
It can be triggered by an acute injury or by a chronic process.
The pain felt from a cut, bruise, or arthritis are examples of somatic pain.

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Visceral Pain
Visceral painis detected by nociceptors in the body’s internal organs.
Unlike somatic pain, you might not feel visceral pain exactly at the area that is injured or inflamed.
Phases
When nociceptors detect physical damage to your body, they create electrical signals.
The signals travel to your spinal cord, which then sends the message up to the brain.
A person’s pain threshold and tolerance are based on a number of factors, both learned and inherited.
This can lead to chronic pain issues such asheadaches,arthritis,fibromyalgia, andpelvic pain.
More specifically, when it comes to medications, most target one of the four pain phases.
Likewise, an epidural spinal injection for a bulging or herniated disc also targets phase one.
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