Livedo racemosa is always the result of an underlying condition and has a strong association with antiphospholipid syndrome (APS). If the rash is associated with systemic symptoms, doctors must check whether the rash is livedo reticularis or livedo racemosa, a related condition that also causes mottling. Secondary livedo reticularis: Mottled skin caused by an underlying condition.Primary or idiopathic livedo reticularis: Mottled skin that does not have a cause.It commonly affects children and babies, but may also affect adults. Physiologic livedo reticularis/ cutis marmorata: A temporary reaction to the cold that comes and goes.The main types of livedo reticularis are: The medical name for this symptom is livedo reticularis. This may mean more deoxygenated blood is under the skin’s surface, which causes the vivid web- or lace-like pattern. Researchers believe that mottled skin develops when there is a lack of blood flow to the skin. This pattern will usually appear red, bluish, purple, or brown.
Mottled skin is a net or web-like pattern on the skin.
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