blue toe syndrome https://github.com/monarch-initiative/mondo/issues/8049 https://www.malacards.org/card/blue_toe_syndrome UMLS:C0242645 MEDGEN:66940 purple toe syndrome warfarin blue toe syndrome MONDO:0001883 trash foot DOID:14121 MESH:D018438 A condition that is caused by recurring atheroembolism in the lower extremities. It is characterized by cyanotic discoloration of the toes, usually the first, fourth, and fifth toes. Discoloration may extend to the lateral aspect of the foot. Despite the gangrene-like appearance, blue toes may respond to conservative therapy without amputation. cholesterol embolism