Raynaud’s phenomenon is a condition characterized by colour changes in the digits mostly on exposure to cold, but also due to smoking or stress. It occurs due to spasming and constriction of the blood vessels reducing blood supply to the area. The digits turn pale, then blue and finally red as the vessels reopen. Raynaud’s phenomenon may be associated with rheumatic disease.
Care should be taken to protect the digits and avoid exposure to cold temperatures, smoking and emotional situations. Your doctor can also prescribe medications to treat your condition.