Wear a warm hat in cold weather. Avoid contact with cold objects, even for brief moments. While preparing meals, use tepid, not cold, water. During an attack, without realizing it, one's skin can more easily burn. Massaging the hands and fingers every evening helps reduce the severity of the attacks, by stimulating blood circulation in that area.
Stressful situations produce a spasm of the blood vessels.
As much as possible, avoid such situations. Keep calm, cheerful, and relaxed. Plan ahead and avoid scheduling pressures. Trust in God and believe He will care for you. Vigorous outdoor exercise will strengthen the entire body, and also relax it.