[Digital flow exploration by color Doppler ultrasound in patients with Raynaud's disease or systemic sclerosis].

Background: Raynaud's phenomenon (RP) is a frequent vascular paroxysmal syndrome of the extremities. Generally benign, the condition is called Raynaud's disease (RD), which may reveal a connective tIssue disease, particularly systemic sclerosis (SS). We evaluated digital blood flow in patients with RD and SS using color Doppler ultrasound.