Complex Regional Pain Syndrome (CRPS)

Overview

Complex Regional Pain Syndrome (CRPS) is a chronic, often debilitating pain condition that typically develops after an injury, surgery, or other physical trauma — sometimes disproportionate to the original event. It is characterized by severe burning pain, abnormal sensory changes, and dysfunction of the autonomic nervous system, primarily affecting a limb. CRPS is classified as Type I (without confirmed nerve injury) or Type II (with a confirmed nerve lesion).

Common Symptoms

•Intense, continuous burning or throbbing pain in an arm, leg, hand, or foot

•Extreme skin sensitivity (allodynia) — even light touch causes severe pain

•Skin color and temperature changes (red, blue, or pale; warm or cool patches)

•Swelling and stiffness in the affected joint

•Abnormal sweating in the affected area

•Changes in hair and nail growth patterns on the affected limb

Common Causes

•Fractures or orthopedic injuries (most common trigger)

•Surgical procedures involving the limbs

•Sprains, crush injuries, or soft tissue trauma

•Stroke or other central nervous system events

•Immobilization of a limb for extended periods

•In some cases, no clear precipitating event can be identified

Who May Benefit from Treatment

Any patient with a confirmed or suspected CRPS diagnosis — particularly those whose pain is out of proportion to their injury, whose symptoms are spreading, or who have not responded to standard analgesics — should seek specialized pain management evaluation. Early treatment significantly improves long-term outcomes.

Treatment Options at Echo PMR

•Sympathetic nerve blocks (stellate ganglion or lumbar sympathetic) to interrupt aberrant pain signaling

•Spinal cord stimulation (SCS) — a highly effective neuromodulation approach for refractory CRPS

•Ketamine infusion therapy to address central sensitization underlying the pain cycle

•Intravenous (IV) medication management with adjuvant agents targeting neuropathic pathways

•Physical therapy integration to maintain limb mobility and prevent disuse atrophy

•Medication management including membrane stabilizers (gabapentinoids), antidepressants, and anti-inflammatory agents

Recovery Expectations

CRPS responds best to early, aggressive, and multidisciplinary intervention — outcomes are significantly better when treatment begins within the first 12 months. While complete remission is possible, many patients achieve substantial pain reduction and functional improvement that allows a return to meaningful daily activity. Spinal cord stimulation in particular has demonstrated long-term efficacy in carefully selected CRPS patients.

When to Seek Care

If you or a loved one is experiencing burning limb pain, extreme skin sensitivity, or color and temperature changes following an injury or surgery, do not delay — contact Echo PMR promptly. CRPS is a time-sensitive condition where early care makes a critical difference.