What motor clinical manifestation may be present in a patient with complex regional pain syndrome (CRPS)?

In the context of complex regional pain syndrome (CRPS), paresis, which refers to a condition of muscle weakness or partial loss of voluntary movement, may be a significant motor clinical manifestation. CRPS typically occurs following an injury, leading to a range of symptoms including severe pain, swelling, and changes in skin color and temperature in the affected limb. The condition’s neurogenic component can lead to altered motor function, resulting in weakness or difficulty in muscle control, known as paresis.

Paresis can arise due to disuse of the affected limb because the pain associated with CRPS can discourage movement, leading to the weakening of muscles over time. In addition to the direct impacts of pain, the nervous system's response to the injury can further contribute to muscle weakness. The overall motor function in the limb can become compromised, leading to observable muscle weakness, making paresis a relevant and common manifestation in CRPS patients.

The other symptoms listed, while they may occur in various neurological or musculoskeletal conditions, are not as closely associated with CRPS as paresis. Understanding the specific manifestations like paresis provides insight into how CRPS affects motor function and the importance of rehabilitation and early intervention to address these issues.