[Capillaroscopy--an insufficiently known and underused method in rheumatology].

Capillaroscopy is a noninvasive and harmless morphological method for examination of the nailfold capillaries in both suspected and already diagnosed patients with systemic connective disease. The most useful aspect is in discrimination between the patients with primary and secondary Raynaud's phenomenon. Many of the mentioned features should make capillaroscopy a part of the diagnostic algorithm and follow-up in everyday rheumatologic practice.