Carpal Tunnel Syndrome in Autoimmune Rheumatic Diseases and Inflammatory Bowel Diseases: Retrospective Population Cohort Study.

Objective: The relationship between autoimmune rheumatic diseases, inflammatory bowel diseases, and carpal tunnel syndrome is unclear. We aimed to survey the occurrence and characteristics of carpal tunnel syndrome in autoimmune rheumatic diseases and inflammatory bowel diseases, compared with the general population. Methods: We used the Longitudinal Health Insurance Database 2015 from Taiwan's National Health Insurance Research Database. Patients diagnosed with autoimmune rheumatic diseases/inflammatory bowel diseases were identified. The incidence rates and surgical rates of carpal tunnel syndrome among individual diseases were calculated. The hazard ratios when compared with age and sex matched, and 1: 1 ratio control groups were surveyed. Results: A total of 2591 women and 701 men were identified. The incidence rate of carpal tunnel syndrome was highest in Crohn disease (1001 per 100,000 person-years, 95% confidence interval = 0-2747), followed by scleroderma and Sjögren syndrome. The incidence rate in the control group was 571 per 100,000 person-years (95% confidence interval = 314-829). Significantly increased adjusted hazard ratios were seen in Sjögren syndrome (1.44, 95% confidence interval = 1.09-1.90) and rheumatic arthritis (1.33, 95% confidence interval = 1.05-1.70). The overall surgical rate was 0.2% in patients with autoimmune rheumatic diseases/inflammatory bowel diseases and 0.3% in the control group, without a significant difference (P = 0.85). Conclusions: Patients with Sjögren syndrome and rheumatic arthritis are susceptible to carpal tunnel syndrome. Patients with autoimmune rheumatic diseases/inflammatory bowel diseases have similar surgical rates as general population. [ABSTRACT FROM AUTHOR]