Itch is also known as pruritus. It is an unpleasant feeling. You may want to scratch the skin to get relief. Itchy skin is annoying and may cause stress. If you itch and are unable to do activities, you may have anxiety or low mood. Scratching all the time can harm the skin. You may have just one area that feels itchy or it may be over your whole body. Most often your skin may itch because it is dry. It may also be caused by a much more serious health problem.