A therapeutic or diagnostic injection, comprising a combination of local anaesthetic and corticosteroid, plays a crucial role in evaluating the potential reversibility of pain originating from non-spinal nerves or joints. This comprehensive procedure involves two distinct components, each serving a specific purpose in the diagnostic and therapeutic process.

The initial component involves the administration of a local anaesthetic. This anaesthetic is skillfully delivered to the targeted area, inducing a temporary state of numbness. This numbing effect can last for several hours, during which patients can experience relief from their discomfort. Importantly, this temporary relief serves as a valuable diagnostic tool. If the pain subsides while the area is numbed, it suggests that the source of pain is likely to be in the region where the anaesthetic was applied. This observation assists in confirming the diagnosis and pinpointing the precise origin of the pain.

The second component of the injection involves the use of a corticosteroid. Beyond its diagnostic role, the corticosteroid serves as a therapeutic agent. It plays a pivotal role in addressing any underlying inflammation contributing to the pain. In cases where inflammation is present, the corticosteroid can provide a more sustained and extended period of pain relief, ranging from several weeks to several months. This anti-inflammatory effect not only alleviates the immediate discomfort but also promotes healing and recovery.

In essence, this dual-component injection procedure is a comprehensive approach to both diagnosing and managing pain stemming from non-spinal nerves or joints. It not only offers valuable insights into the source of pain but also provides therapeutic relief, enhancing the overall well-being of individuals experiencing such discomfort.