What could these multiple holes be on his foot?

[Doobi]

My son has acquired quite a few blisters just recently, from too much running around..

Anyway, when I was applying his blister plasters and saw the bottom of his foot/toes, I'm met with a load of these weird circles.. they make me want to puke- what's that phobia again?

Is it something or nothing?

take him to chemist.the below are a you were talk bout bit looks sore-what socks is he wearing? maybe(again speak to chemist)powder his feet ?would insoles in shoes help.

I've had this, it is gross isn't it!

I would try daktarin for athletes foot first. And be careful about drying feet, not sharing towels and wearing dry, leather shoes, changing daily.

are they itchy?

Air those feet out and let them dry. Make sure they're dried properly before putting on socks. If his feet are still getting swampy he needs better socks and shoes.

Veruccas

My boyfriend at university (many moons ago) had this - the local GP diagnosed it as mild trench foot!!! I remember it has a slightly cheesy smell and he said his feet felt quite hot. Caused by wearing the same pair of Doc Martins day in day out....it cleared up when he bought a new pair of shoes and started letting them dry out in between wears.