Rash

[itchy]

i have got a rash on the top of my foot (including 3 toes) that i been
fighting for a year. i've tried everything OTC. it started out looking
and acting just like ringworm(which i've had before). it has red
raised dots on one side of the rash it totally itches like mad! i found
soaking it in cool/cold water seems to be better than warm/hot. it is
thick and feels like a callus but is red and has scabs from scratching. it
slowly keeps moving up my foot and is almost half up the midst of my
foot. thats the only place it is at and my husband nor my child has
gotten it so its NOT contagious. do you have ANY clues what i can do? its embarrassing so i aint asked a pharmacist to look at it. it gets air everyday, sun dont help it. hoping you have some idea. thanks for your time.