What symptom is characteristic of complex regional pain syndrome?

Complex regional pain syndrome (CRPS) is a chronic pain condition that typically follows an injury or surgery and is characterized by a variety of symptoms. One of the hallmark symptoms of CRPS is persistent burning pain, which can be described as a continuous, deep, and often debilitating discomfort. This burning sensation is often disproportionate to the initial injury and can spread beyond the original site of trauma, affecting surrounding areas.

The distinguishing feature of burning pain in CRPS stems from altered nerve function and inflammatory responses that result in heightened sensitivity and abnormal pain processing. Individuals with CRPS may also experience changes in skin temperature, color, and texture, which further differentiate this syndrome from other pain conditions. The emphasis on persistent nature is also critical, as the pain associated with CRPS does not typically follow a clear episodic pattern as seen in other pain types.