Raynaud's Disease (named after Dr. Maurice Raynaud) is a condition of poor circulation to the extremities (fingers and toes). It results from constriction or spasms of the blood vessels. This happens when the sympathetic nervous system is over stimulated and can be triggered by emotional stress.
Although Primary Raynaud's is considered idiopathic (unknown cause), a systems approach looks at factors in the rest of the body leading to poor circulation and blood stagnation.
Secondary Raynaud's is the byproduct of other disorders (such as connective tissue disorders) or caused from medications.