“Vasculitis” is a general term for a group of diseases that involve inflammation in blood vessels. Blood vessels of all sizes may be affected, from the largest vessel in the body (the aorta) to the smallest blood vessels in the skin (capillaries). The size of blood vessel affected varies according to the specific type of vasculitis. Source: John Hopkins Vasculitis Center Website: Located at http://vasculitis.med.jhu.edu/

Livedo Reticularis

What is livedo reticularis?

Livedo reticularis refers to a condition in which dilation of capillary blood vessels and stagnation of blood within these vessels causes mottled discolouration of the skin. It is described as being reticular (net-like) cyanotic (reddish blue discolouration) cutaneous discolouration surrounding pale central areas. It occurs mostly on the legs, arms and trunk and is more pronounced in cold weather.

Source: Dermnet- http://www.dermnetnz.org/index.html

As seen on this woman's arm
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...and on this woman's leg
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