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livedo

livedo (li-ve´do)

A bluish discoloration of the skin, either in limited patches or general. [L. lividness, fr. liveo, to be black and blue]
postmortem l. a purple coloration of dependent parts, except in areas of contact pressure, appearing within one half to two hours after death, as a result of gravitational movement of blood within the vessels.postmortem hypostasis, postmortem lividity, postmortem suggillation;
l. racemo´sa l. reticularis
l. reticula´ris a persistent purplish network-patterned discoloration of the skin caused by dilation of capillaries and venules due to stasis or changes in underlying blood vessels including hyalinization; rarely appears as a developmental defect.angiitis livedo reticularis, dermatopathia pigmentosa reticularis, l. racemosa;
l. reticula´ris idiopath´ica an extensive and permanent form of l. reticularis; in rare instances associated with central arterial disease.
l. reticula´ris symptomat´ica a discoloration or mottling of the skin due to some demonstrable cause, such as seen in erythema ab igne, and in certain tuberculids. See also cutis marmorata.
l. telangiectat´ica a permanent mottling of the skin due to an anomaly, probably congenital, of the cutaneous capillaries; a form of l. reticularis.

 

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