My left arm itches and feels like something is biting me, yet there is nothing on it. Of course, I've tried calamine lotion, but it itches more and also with Benedryl cream
, it itches even more, also. The sun even makes it itch. Have had this problem for 6 years now-what could be causing it and how can I get rid of this problem? I have SCARS on that arm from all the times this happens.