An injury to the ilioinguinal nerve would be classified under which type of CRPS?

The classification of Complex Regional Pain Syndrome (CRPS) into Type I and Type II is based on the presence or absence of identifiable nerve injury. Type I CRPS, formerly known as reflex sympathetic dystrophy (RSD), typically occurs after an injury without a specific nerve injury, while Type II, formerly termed causalgia, is associated with a distinct nerve injury.

When considering an injury to the ilioinguinal nerve, it represents a clear example of a known nerve injury. This aligns with the defining characteristics of Type II CRPS, where symptoms arise as a direct consequence of damage to a nerve, leading to specific changes such as pain, swelling, and sensory changes in the affected area. Therefore, an injury to the ilioinguinal nerve is classified as Type II because it satisfies the criteria of being linked to a specific nerve injury.

In contrast, Type I would not apply here, as the presence of a nerve injury points clearly to Type II. Thus, the correct classification for an injury to the ilioinguinal nerve is indeed Type II CRPS.