I have never been on Accutane and I have EHK, but I have suffered from similar problems with raw spots in the same places that you seem to have them. I clean mine with Betadine and then use Bactracin or another petroleum-based antibacterial ointment. They are typically thicker, longer lasting and seem to promote healing, at least for me.
The hardest part, of course, is for the duration, I can't have my clothing touching those spots nor can I put any pressure on them until they are fully healed.
I would be worried that the Dakin's solution is quite harsh? I have the recipe for it but I have never used it so I am curious to hear what you think of it.