DD is 6. We're going on a hike today. She is not amused. At the station she suddenly started complaining her foot itched. By the time we were on the train it was the backs of her legs, ankles to knee and she was in tears about it, trying to rub it on the seat and scratch.
We've changed socks. I've put arnica cream on her. The skin looks slightly dry, but no redness, no sign of bites. She is crying to go home which is rather convenient
What could it be?