The effect of deep oscillation and biofeedback on Raynaud's phenomenon secondary to systemic sclerosis (SSc) remains to be determined. A prospective randomized controlled pilot study was performed in SSc patients receiving either deep oscillation, biofeedback thrice a week for four weeks or were randomized to the control group.
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RP score , measured by a visual analogue scale (VAS)
Timeframe: 12 weeks