Is raynauds phenomenon a serious concern for most people?

Sometimes: Raynaud's is due to constriction of blood vessels in response to cold or stress. Although, red, blue and white colors of the fingers or toes can be due to this construction it can be found in a variety of settings. It can run in families, be related to serious systemic connective tissue diseases, or be related to certain medications as as smoking. It can be serious and you need and evaluation.

Raynaud's: this depends on the severity of the problem. Making sure to use gloves-preferably mittens on the hands to increased warmth is recommended, as well as the use of warm socks to protect feet. If there is an underlying condition causing the Raynaud's, this should be taken care of. If not, discuss other treatments with your primary doctor, which may include biofeedback or some antihypertensive meds