Watch October 1 is World Urticaria Day. Urticaria, also known as hives, is an itchy, bumpy skin rash and one of the most common diseases of the skin. One out of four persons develops urticaria at some point of his or her life. So lets raise awareness and understanding for this disease. Professor Marcus Maurer from Charite Universitätsmedizin Berlin sends Urticaria Day Greetings from Vienna, where the European Academy of Dermatology and Venereology holds its annual meeting. Happy Urticaria Day! And never give up!