People with NSAID-sensitive hives may tolerate COX-2–selective options better—but only after medical advice.
3) “Physical” urticarias: when everyday sensations set skin off
Hives aren’t always about foods or pollen. Sometimes physical forces are the trigger:
Dermographism & friction: Scratching, tight waistbands, or rough towels can raise linear wheals within minutes.
Cold urticaria: Cold air, ice packs, or swimming in cold water trigger welts; a simple “ice cube test” can aid diagnosis. Severe reactions (even fainting) can occur with full-body cold exposure.
Cholinergic (heat/exercise) urticaria: Pinpoint, short-lived hives appear with
