Rash on legs on every visit to Italy

So I know that this can happen when you do a lot more walking or standing than usualsomething that almost always happens on holiday, even if the weather in May isn't scorching. The extra legwork causes blood to pool in your lower legs, putting pressure on the tiny capillaries just above your ankles, which react by leaving those pinpoint red spots. Maybe try light compression or support socks while you're out exploring. Take vshort sit down breaks.

Sounds like a heat rash even though it might not be that hot.

I know I do walk quite a lot in Italy as I'm keen to see archeology, museums, galleries and so on.
Coild this be it?
I expect it is for me as we like to go in September which isn't really hot either.

Just googled this as I've had it too.

Even in cool or moderate weather, taking a trip often means walking or standing significantly more than usual (sightseeing, museum tours, navigating airports). Prolonged standing and walking increase blood pressure in the small blood vessels (capillaries) of the lower legs. This can cause slight inflammation and leakage of tiny red blood cells into the skin, appearing as non-raised red pinpricks.

unitedveincenters.com/blog/what-is-disney-rash/?hl=en-GB#:~:text=The%20most%20common%20symptom%20is%20the%20appearance,also%20typical%2C%20further%20contributing%20to%20the%20unease.

Who know but it it is an allergic reaction anti histamines might just help Don’t get the ones that make you drowsy