Hi BC, not sure why your itching
but if it was fleas, you'd definitely know cause you'd see them !!
I had Flea infestation only once, and I remember coming out of the shower to get a towel.
in the space of 10 seconds of walking on the carpet, I had 27 fleas on my leg's
reason I remember; 1 - I counted each one as I put them in Very Hot Water
(cause the little sod's r hard to kill by squashing)
and 2 - Once youv'e had a Flea infestation "you Never Forget It "
unless you are allergic to something else ?? you could try anti-hestamines to see if itching stop's ??