What are key symptoms of chronic spontaenous urticaria?

• Urticaria is a condition of development of wheals (hives), angioedema or both • In most cases, CSU is probably an autoimmune disease • Typical feature of wheal in urticaria patient • Angioedema in urticaria patient Typical wheal feature (central swelling surrounded by erythema, prominent itch, occasional burning, Hives last 4-24 hrs while inducible ones last less 30mn to 2 hrs) Angioedema in urticaria pt (Up to 40%, rapidly developing skin swelling or mucus membrane at level of deep dermis/SC, reabsorbs slowly lasts 2-4 days, sometimes pain and not itch