Vitamin D serum levels and the risk of digital ulcers in systemic sclerosis: A longitudinal study

Aim Low levels of vitamin D (25OHD) have been found to associated with digital ulcers (DUs) in systemic sclerosis (SSc), although only cross‐sectional studies have been performed. We aimed to investigate if variations in vitamin D serum levels over time affect DU in SSc. Methods This is a retrospective study on 65 patients. 25OHD was measured in 2011 and 2016 and its variations correlated with DU. Results The mean age of our cohort was 58 (SD...