deanne, in my vast experience with boys and diaper rash
;D, when you get a rash like what you describe, an anti-fungal is the only thing that works. Cortaid is cortisone, so it works some, and I don't know what Schraders paste is, but a fungicide is what will cure it in a matter of hours.
Everything else takes days.
And I meant to say "vagisil", not "magisil" in my post, sorry.