I agree this isn't herpes and most likely just a reaction to something. I have only known of one case of confirmed herpes on the ankle and this is clearing up to fast to be hsv.
I really doubt it is herpes. I am thinking maybe poison ivy, but depending on where you live, that is probably unlikely too. Maybe an allergic reaction to something?
Is this herpes? Totally was blind to it happening all the way down their I though it was only in the boxer region