Cold hypersensitivity in the lower extremities

Background This study aimed to investigate the frequently overlooked symptoms of cold hypersensitivity and heavy legs related to varicose veins in a large sample of patients. Methods Data on 8782 adults aged 30-70 years without a history of cancer were sourced from the Taiwan Biobank between 2008 and 2020. Varicose veins, cold hypersensitivity and heavy leg sensations were assessed using questionnaires and analysed using logistic regression models with various covariates. Statistical analyses were performed, with analysis of variance for continuous variables and χ 2 tests for categorical variables at a significance level of 0.05. Results Our analysis showed significant associations between varicose veins, cold hypersensitivity, and heavy legs (p<0.0001). Logistic regression models showed that moderate and severe cold hypersensitivity increased the risk of varicose veins with ORs of 1.490 (95% CI 1.205 to 1.842) and 1.894 (95% CI 1.546 to 2.320), respectively. Similarly, heavy legs were strongly associated with varicose veins (OR 4.239, 95% CI 3.381 to 5.315), and the interaction between cold hypersensitivity and heavy legs was significant (p=0.0009). Notably, the greatest risk for varicose veins was observed in individuals with heavy legs and severe cold hypersensitivity (OR 7.135, 95% CI 4.980 to 10.221). Conclusions The results of this study highlight the clinical significance of considering cold hypersensitivity and heavy legs as vital symptoms for diagnosing varicose veins, particularly in the absence of arterial disorders, which can improve diagnostic accuracy and patient outcomes.