A crisis can last from a few minutes to a few hours and cause one or more of the following symptoms.

• Un change in skin color in the affected region, which often changes from natural rosé to White when the blood flow decreases in the arteries. In this first phase of the crisis, there is often a numbness and one refroidissement, with or without loss of sensitivity.
• Sometimes the affected part becomes Blue, which indicates that it is no longer supplied with oxygen.
• When the affected parts warm up or when the stress subsides, one can feel tingling, heartbeats and pain (more rarely). Sometimes there is a slight swelling and redness.

Notes. Symptoms are more severe, intense, and last longer in patients with Raynaud’s syndrome. In people affected by diseases associated with this syndrome, other symptoms specific to these diseases are usually present (see below).