Inflammatory cell and epithelial characteristics of perennial allergic and nonallergic rhinitis with a symptom history of 1 to 3 years' duration.

BACKGROUND Perennial rhinitis is an inflammatory condition of the mucosal lining of the nose that may be caused by allergic and nonallergic mechanisms. OBJECTIVE We sought to characterize the cellular pattern and structural changes in the nasal mucous membrane of patients with perennial rhinitis and compare them with those of control subjects. METHODS… CONTINUE READING