Q: What is Sneddon syndrome?
Answer: When patient develop CVA and found to have widespread livedo reticularis on physical exam, it is known as Sneddon syndrome.
Clinical significance: Patient probably has Anti-Phospholipid Syndrome proved otherwise.
Francès C, Piette JC. The mystery of Sneddon syndrome: relationship with antiphospholipid syndrome and systemic lupus erythematosus. J Autoimmun 2000; 15:139.