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.
It can be easy to mistake hives for other disorders because the allergy triggers can be difficult to find. Another problem with diagnosing hives is that the symptoms are relatively generic -- red, itchy welts on your skin are a common symptom among many skin disorders. Hives can be caused from allergens as well as physical and environmental factors such as stress, heat, sunlight or water.