Understanding the allergic response: In an allergic reaction, an allergen stimulates the release of chemicals that attach to our body’s mast cells, triggering these cells to release histamine. Histamine is responsible for the typical symptoms of the allergic response: Itchy tearing eyes, runny nose/sneezing, rashes/hives, congested sinuses/headaches, wheezing, even stomach cramps and diarrhea. Antihistamines block […]