Nevaeh continues providing her health history, including that she is severely allergic topollen….

➤ What type of hypersensitivity is a pollen allergy?
Pollen allergy is a Type I hypersensitivity, also called immediate or IgE-mediated allergy. Initial exposure leads to IgE production that coats mast cells. Re-exposure causes allergen cross-linking of IgE, mast cell degranulation, and release of histamine and mediators, producing sneezing, itching, rhinorrhea, asthma, or anaphylaxis.