skin and integumentary tissue symptom cyanosis true true symptoms https://www.epilepsy.com/connect/forums/living-epilepsy-adults/cyanosis SyOID:17346 SYMP:0000537 ICD9CM_2005:782.5 Cyanosis is a skin and integumentary tissue symptom characterized as a bluish or purplish discoloration (as of skin) due to deficient oxygenation of the blood. UMLS_CUI:C0010520 UMLS_ICD9CM_2005_AUI:A0044296