Pharmacotherapy or immunotherapy complements environmental control for
allergic rhinitis patients who are sensitive to unavoidable or multip
le allergens. For cost-effective management, treatment used should be
targeted at symptoms, with attention to associated medical conditions
or drug interactions. When symptoms occur often enough that continuous
drug use is warranted, nasal steroid sprays should be considered firs
t-line therapy. Immunotherapy is appropriate when symptoms are present
for more than 6 months each year or when drug costs exceed those for
allergy shots.