alexia An agnosia that is a loss of the ability to recognize text. Aphemesthaesia DOID:13417 DOID:4427 ICD9CM:315.01 MSH:D004410 SNOMEDCT_2010_1_31:158316004 SNOMEDCT_2010_1_31:206985003 SNOMEDCT_2010_1_31:9236007 UMLS_CUI:C0002018 UMLS_CUI:C0013388 acquired dyslexia disease_ontology agnosia