Urticaria:
Urticaria, known to many simply as hives, is a common reaction to a wide range of allergens and irritants. It’s caused by histamines, a compound our bodies produce to mobilize the immune system against threats. The reaction can take the form of itching, eye watering or sneezing, but the goal is the same — get the foreign substance out. [“It’s So Cold, You Might Be Allergic to It,” Leah Froats, D-brief]
