Idiopathic or primary livedo reticularis refers to a netlike pattern of reddish-blue skin discoloration, usually on the legs. The condition is linked to swollen blood vessels. It may get worse when the temperature is cold.
Idiopathic means the cause is unknown.
Livedo reticularis; Primary livedo reticularis
Livedo reticularis - close-up
Livedo reticularis on the legs
Cholesterol emboli Livedo Reticularis - feet