I have small pimples all around the front of my right foot only, it appeared 1-2 months ago, it’s a little bit painful when I touch it or walk on it, it has a white head and it’s more visible when I take a shower, what it could be?

I have small pimples all around the front of my right foot only it appeared 12 months ago its a little bit painful when I touch it or walk on it it has a white class=