I often get a ring of little itchy bumps around my ankles that show up a day or so after I hike. I am beginning to wonder if there are fleas, chiggers or some other biting small critter that live in my wool socks? I had this my last trip and honestly, there were few bugs out and I wore gaiters the entire time. Has anyone else had this problem? I was thinking it may be a skin allergy to the socks, but I never get this anywhere else and I wear a lot of wool.