Livedo Reticularis

Definition: Persistent net-like violet skin discolouration.

It represents the pattern of venous channels at the periphery of arterial cones in the skin. Must be distinguished from cutis marmorata which is identical in appearance but occurs only in response to cold. Cutis marmorata is extremely common in babies and is entirely physiological. Cutis marmorata telangiectatica congenita is a congential skin disease characterised by livedo reticularis with ulceration.

Caused by: