Mar 16, 2024 ·Urticaria, also known ashives, is an outbreak of pale red bumps or welts on the skin that appear suddenly. The swelling that often comes withhivesis called angioedema. Allergic reactions ... Hives, also known asurticaria, are red and sometimes itchy bumps on your skin. Learn about thehivessymptoms, diagnosis and treatment here. Oct 22, 2025 ·Urticaria, or hives, arered, itchy welts that can appear on the skin due to allergies, infections, stress, or other factors.Learn about the types, diagnosis, and prevention of urticaria, and how to manage the symptoms with medication and lifestyle changes. ThemeaningofURTICARIAishives. Did you know?