Fig. 2.

A Nailfold capillaroscopy of the middle finger of the left hand showing normal morphology, density, and dimensions of the capillaries. B Thermogram of both hands, revealing temperature differences of up to 10.9°C between the individual fingers with 21.4°C and 21.2°C in the left index and middle finger, respectively, indicating reduced perfusion, and 32.1°C and 30°C in the right middle and ring finger, indicative of reactive hyperemia.