Living with a chronic pain condition myself, and having spent 27+ years in healthcare — nearly 20 of them as a licensed RN — I’ve explained pain to a lot of patients over the years. But I’ve noticed something: most people have never actually been told how pain works. They know it hurts. They don’t know why it keeps hurting, or why it doesn’t always match the injury. So this week, let’s walk through it — no medical degree required.
Pain starts as a signal, not a feeling
Pain isn’t something that happens in the injured tissue itself. It starts there, but the actual “hurt” you feel happens in your brain, after a signal has traveled a fairly long road to get there. Understanding that road is the key to understanding why some pain fades on its own, and why some pain sticks around long after it should have.
The journey, step by step
- Sensors detect the problem. Specialized nerve endings called nociceptors sit throughout your skin, muscles, and joints. When there’s damage, pressure, heat, or inflammation, they fire off an electrical signal.
- The signal travels along nerves. That electrical impulse moves along peripheral nerves toward your spinal cord — think of these nerves as the wiring that carries the message.
- The spinal cord relays it upward. At the spinal cord, the signal gets passed to your brain through the central nervous system, sometimes getting amplified or modified along the way.
- The brain interprets it. Only once the signal reaches the brain does it actually become “pain” as you experience it — and the brain factors in things like stress, past experience, and fear, which is why pain can feel different depending on the circumstances.
Why chronic pain doesn’t play by the same rules
With acute pain — a sprained ankle, a paper cut — the signal does its job, you protect the area, it heals, and the signal stops. Chronic pain is different. Sometimes the nervous system stays switched on even after tissue has healed, continuing to send pain signals the body no longer needs. Other times, nerves themselves become damaged or irritated (this is what we mean by neuropathic pain) and start firing signals on their own. In both cases, the pain is real — it’s just that the “wiring” itself has become part of the problem, not just the messenger.
Why this matters for treatment
Once you understand pain as a signal traveling a pathway, it opens up more ways to treat it than medication alone. Some approaches work at the injury site. Some work on the nerves carrying the signal. Some work on the nervous system’s overall sensitivity.
This is the idea behind Neurofunctional Pain Management (NFPM), the drug-free approach I use in my practice. It combines electroanalgesia — high-frequency electrical currents that interrupt pain signals along that pathway before they register as strongly in the brain — with neuromodulation, which works to calm an overactive nervous system at its source. Instead of only addressing pain after it’s already “arrived,” these approaches intervene earlier in the process.
Next week, I’ll go deeper into electroanalgesia specifically — what it actually is, how it compares to a standard TENS unit, and what a session looks like.
The takeaway
Pain is a signal, not just a sensation — and signals can be interrupted, redirected, or calmed. If you’ve been told your pain “doesn’t make sense” or been left without an explanation for why it’s still there, understanding this pathway is often the first step toward finding an approach that actually addresses it.
What part of this surprised you most? I’d love to hear from you — reply in the comments or reach out through the contact page.
Watercrest Integrative Pain Solutions provides mobile, in-home, drug-free pain care for adults in the Greater Houston area. This content is for educational purposes only and is not a substitute for medical advice — always talk with your healthcare provider about your specific situation.
