Is there a difference between indoor and outdoor allergic reactions?
Yes, but only in the particular allergens that are present. Inside is mostly dust, mites, animal danders, and some molds. Outdoors are pollens, molds, and insect stings. The bodies immune response and the effect on medications is the same. This concept of indoor and outdoor histamine is pure “Madison Avenue” commercialism. All antihistamines work to block histamine regardless of the type of allergen or the location of exposure.
