Which statement correctly describes CRPS Type 2?

• A. Type 2 is characterized by diffuse pain not limited to a single nerve
• B. Type 2 is common after minor injuries
• C. Type 2 involves causalgia due to partial nerve injury
• D. Type 2 does not involve any nerve injury

Answer: (C)

CRPS Type 2 is defined by causalgia that follows a partial nerve injury, so the pain is typically a burning, continuous symptom that maps to the distribution of the injured nerve and is accompanied by sensory and autonomic changes. This nerve-injury link is what sets Type 2 apart from other forms of CRPS, where no clear nerve injury is identified. The statement describing Type 2 as involving causalgia due to partial nerve injury captures this key idea. The other descriptions—diffuse pain not confined to a single nerve, or absence of any nerve injury—do not fit Type 2 because the defining feature is the relation to a specific nerve lesion.