Livedo reticularis is a blue-reddish skin discoloration and most often localized in the lower extremities. The pathological mechanism of this is poorly understood. Probably it is related to the peripheral blood flow redistribution. Livedo reticularis mostly represents an idiopathic condition but may be associated with systemic diseases.

Causes of Livedo Reticularis

The exact cause of livedo reticularis is unknown. It is felt to be due to spasm of the blood vessels. It occurs more often in women, and usually begins when a person is in his or her thirties.

Symptoms of Livedo Reticularis

Symptoms of livedo reticularis include a mottled, or lace-like, appearance of reddish blue areas on the skin. The mottling is more apparent on the thighs and forearms, and sometimes the lower abdomen. It is more pronounced in cold weather.

Diagnosis of Livedo Reticularis

Livedo reticularis is diagnosed by the appearance of the skin.

Treatment of Livedo Reticularis

There is no treatment for livedo reticularis. Treatment of the underlying cause of secondary livedo may reverse the discolouration. However, over time the vessels become permanently dilated and livedo reticularis becomes permanent regardless of the surrounding temperature.