Pain Is Complex
Pain is an incredibly complex experience, made up of hundreds of different sensory neurons firing together, creating electrical currents riding around at breakneck speeds on heavily myelinated neurons. Once these electrical currents reach our brain, they get parsed out into various brain regions such as the periaqueductal gray, insular cortex and amygdala. We then ascribe meaning to these electrical currents, and the subjective experience that results is what we refer to as pain.
This makes pain a very interesting but difficult to understand process, because pain can be amplified by our vision (seeing an injury occur) and even emotional states. This does open up many novel doors for dealing with pain though, and that is what we will be discussing in this blog! While the mechansims might be complex, we will be simplifying things down to help everyone understand the situation a bit better. We will also discuss how different traditional plants have been used to address pain in cultures around the world.
The most fascinating aspect of pain is how deeply intertwined it is with our sensory experience of the world. The same receptors that allow us to feel different temperatures, vibrations, textures, etc. are the same exact receptors that produce nociceptive signals. Think of it like this. If you take a warm shower at a very comfortable temperature, it can be very relaxing. This is because at very low levels it is activating receptors such as TRPA1 and TRPV1, which we perceive as a pleasant warmth. However, if we crank up the temperature of our shower, this pleasant warth quickly turns into a painful sensation on the skin. This is because at higher temperatures, heat sensitive receptors such as the TRPV1 receptor send out much stronger electrical signals, which our brain then interprets as pain. This is very important, as it allows us to exit the stream of hot water before any tissue damage occurs.
With this in mind, we need to embrace pain if we want to handle pain. At the very core, pain is a great thing. If our TRPV1 receptors didn’t send out strong signals in response to a shower temperature that is much too high, then we would stay under the stream of hot water and perhaps incur some very low grade burns. The issue with pain however arises when there is no risk of injury, and the pain persists. When our sensory systems are working properly, this shouldn’t happen, and pain should be a very precise tool for keeping ourselves safe. Yet oftentimes the pain is dull, doesn’t protect us from anything, and can make life miserable. Let’s dive a little deeper into why this happens!