IHAVE A ITCHY SCALP ( REAR SIDE ONLY ) , SMALL RED ITCHY BUMPS ON MY RIGHT FOREARM , AND A RED ITCHY PATCH ON MY LEFT KNEE UNDER THE KNEECAP . I WAS ON A FLAGYL PRESCRIPTION FOR 10 DAYS FOR POSSIBLE C-DIFF INFECTION OF INTESTINES , JUST SO YOU KNOW . I ALSO TAKE METFORMIN 1000MG TWICE A DAY AND LIPITOR FOR CHOLESTERAL . ANY IDEAS WHAT IS CAUSING THE ITCHY SPOTS . I HAVE NOT SEEN ANY PARASITES . (I.E. LICE OR SCABIES ) .