I found this info on Raynaud's. I didn't know that narcotic use could cause it (that's going to include most of us). If you were a smoker, it could be poor circulation because of PAD or PVD

From Healthlink:



Possible causes of secondary Raynaud's phenomenon, other than connective tissue diseases, are carpal tunnel syndrome and obstructive arterial disease (blood vessel disease). Some drugs, including beta-blockers (used to treat high blood pressure), ergotamine preparations (used for migraine headaches), certain agents used in cancer chemotherapy, and drugs that cause vasoconstriction such as some over-the-counter cold medications and narcotics are linked to Raynaud's phenomenon.

People in certain occupations may be more vulnerable to secondary Raynaud's phenomenon. Some workers in the plastics industry (who are exposed to vinyl chloride) develop a scleroderma-like illness, of which Raynaud's phenomenon can be a part. Workers who operate vibrating tools can develop a type of Raynaud's phenomenon called vibration-induced white finger. In addition, people whose fingers are subject to repeated stress, such as typing or playing the piano, are more vulnerable to the disorder