What is Raynaud syndrome?
[[File:Raynaud syndrome on female airman's hand.jpg|thumb|Raynaud's affecting two fingers on female]] '''Raynaud's syndrome''' is a spasm of small [[arteries]]. This causes reduced blood flow to end [[arterioles]].<ref name=NIH2014Sym>{{cite web|title=What Are the Signs and Symptoms of Raynaud's?|url=http://www.nhlbi.nih.gov/health/health-topics/topics/raynaud/signs|website=NHLBI|access-date=1 October 2016|date=21 March 2014|url-status=live|archive-url=https://web.archive.org/web/20161005190513/http://www.nhlbi.nih.gov/health/health-topics/topics/raynaud/signs|archive-date=5 October 2016|df=dmy-all}}</ref> == References == {{reflist}} [[Category:Diseases and disorders of the cardiovascular system]] [[Category:Autoimmune diseases]] {{stub}}