We want to describe the capillaroscopy alterations observed in patients with Raynaud's phenomenon and primary Sjögren’s syndrome. Our main objective is to establish if there is a specific capillaroscopic pattern associated with Sjögren syndrome and if it is related to visceral extraglandular involvement.

With this study we aim to investigate the genetic background of the disease, to deepen in its pathogenesis and to be able to establish links between genetic variations and different clinic and biologic patterns. This research is based on a multicentric study and it is led by Prof. Javier Martín from the "Instituto López-Neyra" of Parasitology, CSIC (Granada). We contribute by sending samples from our cohort of patients along with the clinical data, and reviewing the results.