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Acute Pain: Why Heat Might Not Be the Best Choice
In this blog post, weโre going to delve into the world of acute pain management, specifically focusing on whether heat is the right approach for fresh injuries. Acute pain resulting from new injuries, like ankle sprains, requires careful consideration, and understanding the underlying neurophysiology is crucial.
Heat for acute pain management
When it comes to addressing pain caused by fresh injuries, the debate between using heat or ice is a common one. In this post, weโll take an in-depth look at acute pain, the inflammatory response, and why using heat immediately after an injury might not be the best choice.
First things first
Before we dive into the heat vs. ice discussion, itโs essential to understand the intricacies of acute pain. The bodyโs response to injury involves a complex process that triggers inflammation. This natural reaction initiates a cascade of events, setting the stage for the healing process.
The Role of Inflammation in Fresh Injuries
Inflammation is a normal and healthy response to injury. It results in the release of various chemicals at the injury site, which activate nerve endings. These activated nerve endings send signals to the spinal cord and brain, translating into the sensation of pain. This process is a protective mechanism, signaling the body to avoid further harm.
A key player in acute pain
One crucial player in the pain process is the TRPV1 receptor located on nerve endings. This receptor becomes sensitized after an injury, making it responsive to temperatures above 43 degrees Celsius. As we explore the effects of heat therapy, itโs important to keep this receptor in mind.
Why heat may not be ideal for acute pain
Now, letโs delve into why applying heat to acute injuries might not be ideal.
1. Heat and TRPV1 Interaction
When heat is applied to an injury site with an already sensitized TRPV1 receptor, it triggers an amplified response. The result is the release of CGRP and Substance P, two compounds that intensify pain signals.
2. Unwanted Outcomes: CGRP and Substance P
CGRP and Substance P are released in response to heat application, further sensitizing nerve endings around the injury site. This heightened sensitivity can lead to increased pain, even with simple actions like applying pressure.
3. Amplified Sensitivity and Vascular Effects
Not only do CGRP and Substance P enhance pain signals, but they also cause blood vessels to dilate. This vascular effect contributes to increased redness and swelling at the injury site. These outcomes create a feedback loop that perpetuates the cycle of pain and inflammation.
Breaking the Pain Cycle
In light of the neurophysiological processes involved, it becomes clear that heat might not be the most effective choice for managing acute injuries. Considering the potential exacerbation of pain and inflammation, alternative approaches such as ice therapy might be more appropriate in the initial stages of injury.
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Heat for pain. Yes or no?
By understanding the interaction between heat, nerve receptors, and inflammatory responses, we can make informed decisions about pain management strategies for acute injuries. If youโre dealing with a fresh injury, consulting a healthcare professional, like a chiropractor, can provide personalized guidance on the most suitable approach to pain relief and recovery.
Disclaimer: This blog post is for informational purposes only and is not a substitute for professional medical advice. Always consult a healthcare provider for personalized recommendations.
about Dr neil cuninghame
Mtech Chiro (DUT)ย ย lย ย PG Dip Pain Mngmnt (UCT)
Hi, Iโm Dr. Neil Cuninghame, aย Hillcrest Chiropractorย specializing in helping you move better, feel better, and live better. Whether youโre struggling with chronic pain, sports injuries, or everyday aches like headaches, back pain, or shoulder discomfort, Iโm here to guide you toward lasting relief. With over 16 years of experience, Iโve helped athletes, busy professionals, parents, and many others overcome pain and return to doing what they love. My approach combines evidence-based care, personalized treatment plans, and a deep understanding of how the body works.
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Disclaimer: This blog post is for informational purposes only and is not a substitute for professional medical advice. Always consult a healthcare provider for personalised recommendations.
ยฉ Dr Neil Cuninghame 2025