Sneezing, itching, watery eyes, and nasal obstruction are some of the frequent reactions the immune system has when challenged by allergens. The allergy known as rhinitis, often called hay fever or allergic…
Sneezing, itching, watery eyes, and nasal obstruction are some of the frequent reactions the immune system has when challenged by allergens. The allergy known as rhinitis, often called hay fever or allergic…