May be related to autoimmune conditions
3. Inducible (Physical) Urticaria
Triggered by external stimuli, including:
Dermographism: Hives from scratching or pressure
Cold Urticaria: Triggered by low temperatures
Pressure Urticaria: From tight clothing or prolonged pressure
Solar Urticaria: Reaction to sunlight
Cholinergic Urticaria: Triggered by heat, exercise, or hot showers
Unexpected Triggers You Might Not Know
Unexpected Triggers You Might Not Know
While food and environmental allergies are well-known causes, other, lesser-known triggers include:
Viral infections (like the common cold or hepatitis)
Bacterial infections, such as strep throat
Medications (especially NSAIDs, antibiotics, or aspirin)
Insect stings or bites
Emotional stress — not a direct cause, but it can intensify symptoms
Autoimmune responses — where your body attacks its own mast cells
✅ How Are Hives Diagnosed?
