What type of CRPS is indicated by a patient with one swollen and painful foot?

Complex Regional Pain Syndrome (CRPS) is classified into two main types based on the underlying mechanisms and presence of nerve injury. In this case, the description of a patient with one swollen and painful foot aligns with CRPS Type I, also known as reflex sympathetic dystrophy (RSD).

CRPS Type I typically occurs after an injury or trauma that does not involve a detectable nerve injury. Common symptoms include localized pain, swelling, changes in skin color, and temperature variations in the affected limb. The swelling and pain in one foot mentioned in the question fit the profile of CRPS Type I, as the condition is often unilateral and can manifest as joint swelling and significant discomfort in the extremities.

In contrast, CRPS Type II (previously known as causalgia) is characterized by the presence of a clear nerve injury. This distinction is crucial because while both types can exhibit similar symptoms, identifying the type primarily hinges on whether there is identifiable nerve damage.

The mention of a type of neuropathic pain is not a classification of CRPS but rather a broader category that encompasses various pain syndromes arising from nerve injury or dysfunction. CRPS is recognized specifically as a subtype of neuropathic pain but has its own unique features.

Therefore, the