primary bacterial infectious disease diphtheria https://rarediseases.info.nih.gov/diseases/1875/diphtheria https://www.malacards.org/card/diphtheria ICD10CM:A36 GARD:0001875 ICD9:032 NCIT:C34541 MEDGEN:4334 EFO:0005549 ICD10WHO:A36 MESH:D004165 A Gram-positive bacterial infection caused by Corynebacterium diphtheriae. It usually involves the oral cavity, pharynx, and nasal cavity. Patients develop pseudomembranes in the affected areas and manifest signs and symptoms of an upper respiratory infection. The diphtheria toxin may cause myocarditis, polyneuritis, and other systemic effects. MedDRA:10013023 DOID:11405 ICD9:032.9 MONDO:0005504 SCTID:397428000 UMLS:C0012546 Orphanet:1679 icd11.foundation:508032285 obsolete_diphtheria