What is rsd

Overview

Reflex Sympathetic Dystrophy (RSD), now officially called Complex Regional Pain Syndrome (CRPS), is a rare chronic pain condition that typically develops after an injury, surgery, stroke, or heart attack. The condition involves exaggerated or prolonged inflammatory response and dysfunction of the nervous system, causing intense pain that appears disproportionate to the initial injury.

Types and Classification

CRPS is divided into two types: Type 1 (formerly RSD) occurs without documented nerve injury but follows trauma or immobilization, while Type 2 (formerly Causalgia) follows confirmed nerve injury. Both types present with similar symptoms and require prompt diagnosis and treatment. Early intervention within the first 6-12 weeks significantly improves prognosis and functional outcomes.

Symptoms and Clinical Presentation

Patients experience a constellation of symptoms affecting the injured limb:

• Pain: Burning, throbbing pain often exceeding expected severity
• Swelling: Edema that may persist for months or years
• Skin changes: Mottled appearance, color changes from red to blue to pale
• Temperature changes: Affected limb feels warmer or colder than the opposite side
• Movement impairment: Reduced range of motion and weakness
• Trophic changes: Shiny skin, nail and hair changes

Diagnosis and Diagnostic Criteria

Diagnosis relies on clinical presentation using Budapest diagnostic criteria, which require one symptom from each of four categories: sensory, vasomotor, sudomotor (sweating), and motor/trophic changes. Imaging studies like bone scintigraphy, thermography, or MRI may support diagnosis but are not required. Early recognition is critical, as delayed treatment worsens outcomes.

Treatment Approach

Effective management typically involves multidisciplinary care combining physical therapy, medications, psychological support, and sometimes interventional procedures. Physical and occupational therapy are cornerstones, helping restore function and reduce pain-related disability. Medications may include non-steroidal anti-inflammatories, corticosteroids, neuropathic pain agents, and topical treatments.