[Peripheral haemodynamic disturbances of the limbs in Raynaud's phenomenon (author's transl)].

Study of 36 cases of Raynaud's phenomenon by Doppler effect (radial artery and digital pulp at rest and during hyperhaemia) showed that measurement of peripheral resistance is an excellent method for differentiating idiopathic Raynaud's disease (index higher than 5) from syndromes to obliterative disease of the digital arteries or scleroderma (index less than 4). Capillaroscopy offers additional information concerning the validity of the distal bed, stasis and sludging phenomena and is a diagnostic aid in early scleroderma.