Allergy is a hypersensitivity reaction to a specific protein.
Symptoms: Runny nose, stuffy nose, itchy nose, clear nasal discharge, itchy watery eyes, itchy throat and occasionally itchy ears. It can cause asthmatic symptoms like coughing, wheezing, chest tightness, and shortness of breath. Hives and eczema are manifestations of reactions occurring on the skin.
Treatment: Medications like antihistamines, intranasal steroids, eye drops and immunotherapy.