Self-reported symptoms of cold intolerance in workers with injuries of the hand.

Cold intolerance is a well-recognized complication of crushing injuries and amputations in the hand. These symptoms are usually thought to resolve within 2 years of injury. The objectives of our study were to determine the prevalence and course over time of self-reported symptoms of cold intolerance in workers with hand injuries. Files from a large worker's compensation carrier were randomly selected from index years 2, 4, 6, and 10 after a claim was made. Cohorts comprising cases with diagnostic codes corresponding to traumatic hand injuries and codes referring to non-trauma diagnoses in the hand were assembled for each of the years under consideration. A questionnaire was mailed to a total of 7,088 asking questions related to the symptom of cold intolerance. Twenty-five percent of the surveys were returned. Over 90% of trauma patients from all 4 years reported symptoms of cold intolerance. The rate of cold intolerance in the non-trauma group was between 59% and 69%. Individuals reporting cold intolerance indicated worsening over time in 50% of cases and improvement in only 9%. The severity of injury did not appear to be a factor in the development of cold intolerance. Symptoms of cold intolerance are highly prevalent in workers with significant hand injuries. Workers with non-trauma hand conditions also report a substantial prevalence of this symptom. The development of cold intolerance is not related to injury severity. The symptoms remain either static or deteriorate slightly over time. Improvement is experienced by less than 10% of patients.