acrocyanosis
/ˌæ.kɹoʊ.ˌsaɪ.ə.ˈnoʊ.sɪs/
/ˌæ.kɹoʊ.ˌsaɪ.ə.ˈnoʊ.sɪs/
noun
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A persistent blue or cyanotic discoloration of the digits, most commonly occurring in the hands although also occurring in the face and feet as well.