CHARACTERISTICS OF A HOTSPOT
Have you ever wondered why we call them hotspots???
Myofascial trigger points (MTrPs) are localized areas of hyperirritable muscle tissue that can cause pain and dysfunction. Temperature changes associated with MTrPs can vary depending on the stage of the trigger point and individual factors. However, here are some general temperature changes that may be observed:
1. Increased Local Temperature: MTrPs often exhibit increased local temperature compared to surrounding tissue. This is due to increased metabolic activity and blood flow in the affected area. The heightened metabolic activity may lead to a sensation of warmth when palpating the trigger point.
2. Referral of Heat: In some cases, heat may be referred from the trigger point to other areas of the body. This phenomenon, known as referred heat, can occur along with referred pain and other sensory disturbances associated with MTrPs.
3. Changes in Skin Temperature: Skin temperature overlying MTrPs may be elevated compared to nearby unaffected areas. This increase in skin temperature is believed to result from increased blood flow to the region, which is part of the body's inflammatory response to the presence of the trigger point.
4. Variability in Temperature: The temperature changes associated with MTrPs may be dynamic and can vary depending on factors such as activity level, stress, and environmental conditions. For example, physical activity and stress can exacerbate symptoms and increase local temperature, while relaxation techniques and cold therapy may help reduce temperature and alleviate symptoms.
It's important to note that temperature changes associated with MTrPs are just one aspect of the complex pathophysiology of these muscle abnormalities. Other factors, such as muscle tension, stiffness, and altered neuromuscular function, also contribute to the development and maintenance of trigger points.
These observations are based on clinical findings and research studies examining the characteristics of MTrPs. However, individual responses to trigger point therapy and temperature changes may vary, and further research is needed to fully understand the mechanisms underlying these phenomena.
References:
1. Dommerholt, J., & Gerwin, R. D. (2006). High Prevalence of Myofascial Trigger Points: National Injustice. Journal of Manual & Manipulative Therapy, 14(4), E10–E12.
2. Simons, D. G., Travell, J. G., & Simons, L. S. (1999). Myofascial pain and dysfunction: the trigger point manual (Vol. 1). Lippincott Williams & Wilkins.
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