Acute Pain or Chronic Pain: Understanding to Move Forward

February 27, 2026

Pain can be concerning, especially when it persists. However, not all pain functions in the same way. Understanding the difference between acute and chronic pain can help you better understand what is happening in your body and choose appropriate strategies to improve your condition.


Acute Pain: A Normal Warning Signal

Acute pain is a normal bodily response to an injury, such as a sprain, fracture, or burn. It functions much like an alarm system, alerting you that a part of your body needs protection and time to heal.

In general acute pain:

·     Is linked to a specific injury.

·     Gradually decreases as healing occurs.

·     Its course is often predictable

In this context, the goal is to control pain while allowing the body adequate time to recover.


Chronic Pain: When the System Becomes More Sensitive

Pain is considered chronic when it persists beyond three months, even if the initial injury has healed or is healing.

In such cases, there is not necessarily ongoing tissue damage. Rather, the nervous system may have become more sensitive. Nerves transmit signals more easily, and the brain may amplify these signals.

This means that the pain is real, but it does not necessarily indicate an active injury. The body has become more vigilant or more sensitive.

Understanding this distinction is important, as it can help reduce fear and better guide treatment.


Why Early Pain Control Matters

Although acute pain is normal, very intense or poorly controlled pain should not be ignored. Severe pain at the outset may increase the likelihood that it will persist.

This does not mean that chronic pain will inevitably develop, but it highlights the importance of early and safe intervention. The objective is not only to improve immediate comfort, but also to support better long-term recovery.

In rehabilitation, the aim is not solely to relieve pain, but also to provide you with tools to regain control.


Medication

Certain anti-inflammatory creams or gels may be helpful in the early stages. In some cases, oral medications such as acetaminophen or nonsteroidal anti-inflammatory drugs may also be recommended, depending on your situation. Your pharmacist can help you understand how to use these medications safely and effectively.

Stronger medications, such as opioids, are generally not recommended as first-line treatments because of their associated risks. Your physician is best positioned to determine the most appropriate medication based on your specific condition.

However, medication alone does not always eliminate pain completely.


Complementary Modalities

Nonpharmacological options are also commonly used in rehabilitation. For example, transcutaneous electrical nerve stimulation, known as TENS, is a device that delivers mild electrical impulses through the skin. Research indicates that it can reduce pain in the short term in both acute and chronic conditions. It may be used alone or in combination with other pharmacological or nonpharmacological treatments.

Remaining actively engaged in your pain management process is essential.

In rehabilitation, we can teach you:

·     Simple pain management strategies, such as the appropriate use of heat or cold and specific breathing techniques.

·     Exercises adapted to your stage of healing.

·     A gradual return to activities, with realistic goals.

·     Clear explanations of pain mechanisms to reduce fear and anxiety.

These tools not only help reduce pain intensity, but also support confidence in your ability to move and function.


Conclusion

Acute and chronic pain do not function in the same way, and they are not managed in exactly the same manner.

In all cases, your pain is taken seriously. The objective is to help you understand what is happening, reduce the intensity of your symptoms, and restore a sense of control.

With an individualized, gradual, and appropriate approach, it is possible to improve your condition and support a meaningful and sustainable recovery.


References:

Cohen, S. P., Vase, L., & Hooten, W. M. (2021). Chronic pain : An update on burden, best practices, and new advances. Lancet, 397(10289), 2082‑2097. https://doi.org/10.1016/S0140-6736(21)00393-7


Hsu, J. R., Mir, H., Wally, M. K., Seymour, R. B., & Orthopaedic Trauma Association Musculoskeletal Pain Task Force. (2019). Clinical Practice Guidelines for Pain Management in Acute Musculoskeletal Injury. Journal of Orthopaedic Trauma, 33(5), e158‑e182. https://doi.org/10.1097/BOT.0000000000001430


Johnson, M. I. (2021). Resolving Long-Standing Uncertainty about the Clinical Efficacy of Transcutaneous Electrical Nerve Stimulation (TENS) to Relieve Pain : A Comprehensive Review of Factors Influencing Outcome. Medicina, 57(4), Article 4. https://doi.org/10.3390/medicina57040378


Johnson, M. I., Paley, C. A., Jones, G., Mulvey, M. R., & Wittkopf, P. G. (2022). Efficacy and safety of transcutaneous electrical nerve stimulation (TENS) for acute and chronic pain in adults : A systematic review and meta-analysis of 381 studies (the meta-TENS study). BMJ Open, 12(2), e051073. https://doi.org/10.1136/bmjopen-2021-051073


Nasir, A., Afridi, M., Afridi, O. K., Khan, M. A., Khan, A., Zhang, J., & Qian, B. (2025). The persistent pain enigma : Molecular drivers behind acute-to-chronic transition. Neuroscience and Biobehavioral Reviews, 173, 106162. https://doi.org/10.1016/j.neubiorev.2025.106162


Qaseem, A., McLean, R. M., O’Gurek, D., Batur, P., Lin, K., Kansagara, D. L., & for the Clinical Guidelines Committee of the American College of Physicians and the Commission on Health of the Public and Science of the American Academy of Family Physicians. (2020). Nonpharmacologic and Pharmacologic Management of Acute Pain From Non–Low Back, Musculoskeletal Injuries in Adults : A Clinical Guideline From the American College of Physicians and American Academy of Family Physicians. Annals of Internal Medicine, 173(9), 739‑748. https://doi.org/10.7326/M19-3602


Terminology | International Association for the Study of Pain. (s. d.). International Association for the Study of Pain (IASP). Consulté 16 février 2026, à l’adresse https://www.iasp-pain.org/resources/terminology/


Treede, R.-D., Rief, W., Barke, A., Aziz, Q., Bennett, M. I., Benoliel, R., Cohen, M., Evers, S., Finnerup, N. B., First, M. B., Giamberardino, M. A., Kaasa, S., Korwisi, B., Kosek, E., Lavand’homme, P., Nicholas, M., Perrot, S., Scholz, J., Schug, S., … Wang, S.-J. (2019). Chronic pain as a symptom or a disease : The IASP Classification of Chronic Pain for the International Classification of Diseases (ICD-11). Pain, 160(1), 19‑27. https://doi.org/10.1097/j.pain.0000000000001384


VA/DoD, T. L. G. (s. d.). VA/DoD Clinical Practice Guideline for the Use of Opioids in the Management of Chronic Pain.

Vase, L., Wager, T. D., & Eccleston, C. (2025). Opportunities for chronic pain self-management : Core psychological principles and neurobiological underpinnings. Lancet, 405(10491), 1781‑1790. https://doi.org/10.1016/S0140-6736(25)00404-0



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