• Anna Lis-Święty.
• Department of Dermatology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland. alis-swiety@sum.edu.pl
• Pol. Arch. Med. Wewn. 2019 Nov 29; 129 (11): 798-808.

AbstractRaynaud phenomenon (RP) is defined as recurrent, reversible episodes of vasospasm involving peripheral small vessels, typically in the fingers and toes. Primary (idiopathic) RP is common (it occurrs in about 5% of the general population) and is usually benign. Secondary RP accounts for 10% to 20% of all RP cases and may be associated with complications such as tissue loss, ulcers, and gangrene. Systemic sclerosis (SSc) or, more rarely, other connective tissue diseases are the main underlying conditions. A detailed clinical history and careful physical examination may be helpful in identifying the cause. Routine investigations include a full blood count, measurement of erythrocyte sedimentation rate, C‑reactive protein, antinuclear antibody levels, biochemical profile, thyroid function tests, protein electrophoresis, chest X‑ray, and nailfold capillaroscopy. Capillaroscopy can facilitate a very early diagnosis of SSc. Doppler ultrasound is recommended to evaluate the risk of pathologies in large to medium-sized arteries. Lifestyle modifications may be sufficient to control primary RP, but some patients, and most with secondary RP, require pharmacologic treatment. Several medications are proposed to manage RP and its complications, such as calcium channel blockers, phosphodiesterase type 5 inhibitors, intravenous prostanoids, and topical nitrates. However, scientific evidence for the use of these drugs is still weak to moderate. Despite the lack of efficacy of bosentan in RP treatment, this medication is approved for the secondary prevention of digital ulcers in patients with SSc. In conclusion, the management of RP still represents a challenge. Collaboration between healthcare professionals, patient organizations, and the society could encourage earlier medical assessment of people at risk of SSc.

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