Nailfold and dorsal finger videocapillaroscopy assess microvascular function.
Both techniques evaluate the number of perfused capillaries.
Only dynamic nailfold videocapillaroscopy evaluates microvascular hemodynamics.
Alterations on microvascular hemodynamics precede capillary rarefaction in obesity.
Nailfold videocapillaroscopy detects microvascular dysfunction in obesity.