title: Understanding allergic rhinitis: differential diagnosis and management.
authors.forename: G G
authors.initials: GG
authors.lastname: Shapiro
mesh_terms: D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D012221:Rhinitis, Allergic, Perennial / Q000175:diagnosis* / Q000628:therapy; D006255:Rhinitis, Allergic, Seasonal / Q000175:diagnosis* / Q000628:therapy