signaling neuron
Christoph Burgstedt/Alamy
Whether it’s the fleeting pain of rubbing against a hot oven or the long-lasting throbbing from a broken leg, pain gives us an evolutionary need for survival. It may be life-saving, but the pain can also be devastating and debilitating.
And it’s a growing problem. Life expectancy is increasing, but those extra years are often associated with poor health. Of all medical afflictions, the most common is pain, especially chronic pain that lasts longer than 3 months (see “Considering Chronic Pain as Its Own Disease Offers Better Treatment”). please). With opioid-related deaths rising by a third between 2020 and 2021 in the United States, the opioid epidemic is still raging, and we are at a loss for effective treatments. There is a hopeless shortage, and the treatments we have bring their own problems. Therefore, we need to better understand the experience, its causes and how to treat it.
Surprisingly, it is only relatively recently that we have established a good picture of how and where the sensation of pain is produced. Receptors at the ends of sensory neurons are triggered in the skin, muscles, organs, joints, and other parts of the body exposed to sensory stimuli such as temperature, vibration, and pressure. Gather information from other parts. These neurons extend into a cluster known as the dorsal root…
