What is Persistent (Chronic) Pain

Chronic Pain (Nonmalignant): Pain lasting longer than 3 months (Qaseem et al., 2017; Chou et al., 2009). Complex Regional Pain Syndrome (CRPS): A Chronic Pain condition that affects a limb (arm, hand, leg or foot) usually after an injury to a nerve. CRPS is divided into two types: CRPS-I and CRPS-II. ................
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