
An allergen is an otherwise harmless substance that causes an allergic reaction. Allergic rhinitis, or hay fever, is an allergic response to specific allergens. Common symptoms are runny nose, sneezing, and itchy eyes
Allergic Rhinirit
An allergen is an otherwise harmless substance that causes an allergic reaction. Allergic rhinitis, or hay fever, is an allergic response to specific allergens. Common symptoms are runny nose, sneezing, and itchy eyes
Allergic Rhinirit