Intermittent itching of the underside of the left big toe is a harbinger of what?

[Stoechas]

Something pleasant like Robert Redford circa 1980 bearing tulips would be perfect.

Scratching, I expect

Dodgy washing powder?

Your trainers need a wash.

Athletes foot

Chilblains?

None of these answers are satisfactory.

Isn't it supposed to be going back over old ground?

Fleas

Possibly all the skin on your feet is about to fall off. Happened to me a couple of years ago. Small patch on the side of my toe, the skin on the underside of my foot then loosened like a big blister, swiftly followed by the other foot, all the skin on both feet peeled off within days. Major pompholoyx attack.

I could do with Robert Redford circa 1980 but my toe isn’t itching 😑

Harbinger of a verruca?

Bumper crop of turnips

It could be incipient athlete's foot, happens to me, on occasion. Get the Daktarin smeared on.

@Brigante9 Christ in heaven!

Have contorted myself into a position and viewed the offending tingling region. Skin is intact and completely fungal, parasite and dermatitis free.

Going back over old ground is much more the answer I was after c/o @Fizzadora so I will contemplate what that might mean 🧐

Somebody from your past will get in touch
Or You will meet a handsome stranger in a shoe shop