It goes without saying, where there is an itch, scratch it. But too much scratching will cause skin damage and possibly infection.
In the past, there was one highly-cherished antidote in the family’s medicine kit. An unassuming short squat bottle with a totally unglamorous aluminium cap. It went by the very Hokkienish name of Saw Hong Choon. The pale translucent ointment inside was specially effective against those agitative “mini Grand Canyons” in between the toes. Oh what relief !
Recently I had occasion to recall this treasure, and went to a medicine shop to enquire. Lo and behold, it is still on sale, half a century after I first used it.