• Maria Maddalena Sirufo, Lina Maria Magnanimi, Lia Ginaldi, and Massimo De Martinis.
• Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy.
• Curr Med Res Opin. 2022 Apr 1; 38 (4): 637-639.

AbstractRaynaud's phenomenon (RP) is a frequent clinical finding in the general population that can be observed across multiple medical specialties and nailfold videocapillaroscopy is a first line imaging tool to early differenziate primitive and secondary forms of RP. According to the criteria of LeRoy and Medsger normal nailfold capillaries characterize a primary RP. The recognition of vascular alterations at capillaroscopy is the key to a correct framing of the phenomenon. Capillaroscopy is of significant practical value as it allows a reliable predictive assessment of the developmental risk of the disorder. However, to date, the variety of nomenclature for subjects affected by RP generates uncertainty in patient management and in the possibility of comparing studies. The capillaroscopic findings have a very broad range of normality and a significant presence of non specific microvascular abnormalities are reported also in patients with primary RP. The presence of these non specific vascular changes can make it difficult to differenziate primary and secondary RP. Here we highlight some critical points in the capillaroscopic distinction of primary and secondary RP and relaunch the debate on the classification of the RP because it is likely that what we identify today as the primary RP (pRP) collects different clinical entities with different prognostic significance and different therapeutic needs.

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