Rhinitis, Allergic, Perennial is a condition where the lining of the nose becomes inflamed due to an allergic reaction to substances such as dust mites, animal dander, or mold. It is a chronic condition that can cause symptoms such as sneezing, runny nose, nasal congestion, and itchy eyes. Treatment options may include antihistamines, decongestants, nasal sprays, and allergy shots.