History of Urticaria.- Aetiopathogenesis of Urticaria.- Classification of Urticaria.- Impact of Urticaria: QOL and Performance.- Acute Urticaria.- Chronic Urticaria.- Dermographic and Delayed Pressure Urticaria.- Heat and Cold Urticaria.- Solar Urticaria.- Cholinergic Urticaria and Exercise-Induced Anaphylaxis.- Contact Urticaria.- Urticarial Syndromes and Autoinflammation.- Urticaria Vasculitis.- Angioedema.- Therapy of Urticaria.- Standard Operating Procedures: A Practical Approach.