# Whole-Body Cryostimulation in Complex Regional Pain Syndrome: A Case Study

## TL;DR

A single case study found that whole-body cryostimulation may safely reduce pain and improve function in a woman with ankle complex regional pain syndrome.

## Contribution

First reported case study evaluating whole-body cryostimulation as a treatment for CRPS.

## Key findings

- Significant reductions in pain scores (VAS and SF-MPQ) after cryostimulation.
- Improvements in mobility, muscle strength, and psychological well-being observed.
- MRI showed stabilization or regression of inflammatory features without adverse effects.

## Abstract

Background/Objectives: Complex Regional Pain Syndrome (CRPS) is a debilitating pain condition with complex pathophysiology and limited treatment efficacy. Whole-body cryostimulation (WBC) has shown promising results in other chronic pain syndromes, but no studies to date have examined its use in CRPS. To evaluate the safety, feasibility, and potential benefits of WBC in a female patient with CRPS of the ankle. Methods: A 65-year-old female outpatient with type I CRPS at the right ankle underwent 15 WBC sessions (3 min at −110 °C) over two weeks, without any concurrent pharmacological or rehabilitative interventions. Assessments at baseline and post-intervention included standardized measures of pain (VAS, SF-MPQ), disability (PDI), catastrophizing (PCS), mobility (TUG, Chair Stand Test), strength and ROM (goniometry, MRC), psychosocial status (SF-36, WHO-5, PSQI, BDI, STAI), and MRI of the right knee and ankle. Results: Post-treatment, the patient showed substantial improvements in pain (VAS −66.7%, SF-MPQ −51.7%), function (TUG −31.8%), muscle strength, psychological well-being, and quality of life. MRI and edema measurements indicated stabilization or regression of inflammatory features. No adverse effects were reported. Conclusions: This case suggests that WBC may represent a safe, well-tolerated, non-pharmacological intervention for CRPS, with potential to improve pain, function, and well-being.