allergic rhinitis perennial allergic rhinitis nonseasonal allergic rhinitis perennial allergic rhinitis Allergic rhinitis caused by indoor allergens and lasting year round. MESH:D012221 SCTID:446096008 icd11.foundation:1273917262 MONDO:0024332 UMLS:C0035457 EFO:1001417 non-seasonal allergic rhinitis MEDGEN:19783 NCIT:C92189