Livedo reticularis: When is it a concern?

Livedo reticularis is a vascular condition characterized by a purplish discoloration of the skin, usually on the legs. This discoloration is described as lacy or net-like in appearance and may be aggravated by cold exposure.

Most often livedo reticularis causes no symptoms and needs no treatment. But it can be associated with serious underlying disorders, such as lupus, anti-phospholipid syndrome or Sneddon's syndrome. A rare complication of chronic renal dialysis known as calciphylaxis may first present with a livedo reticularis pattern. In addition, livedo reticularis may occur as a side effect of certain medications, such as hydroxyurea (Droxia, Hydrea).

When to see a doctor
See your doctor if:

• Pain or discomfort accompanies livedo reticularis
• Ulcers develop in the affected skin

When necessary, treatment depends on the underlying cause, if known, and the severity of symptoms.