As head of Americaâs largest oil company, Mr. Tillerson has earned a friendship award from Russia and voiced skepticism about American sanctions that have halted some of Exxon Mobilâs biggest projects in the country.
Top 10 facts about the world. Welts are bumps in the skin that are caused by a fluid buildup directly below the surface of the skin. A number of things can lead to the development of a welt, ranging from trauma to the skin to an allergic reaction.
But for those who have chronic hives, or urticaria, the condition can seem relentless. âChronic idiopathic hives are itchy red welts that persist for at least six weeks and have no known cause,â says Miriam Anand, MD, an allergist with Allergy Associates and Asthma in Tempe, Arizona.