If you do manage time to sit in a bath or just to use a wet wash cloth, stick with cold or warm water. My doctor told me that hot water will make you feel the itch/burn more. So far, my experience has been best when I use a cool wash cloth to try to calm the burning feeling. Then I dry with the softest towel I have - lightly - or I use a little hand-held fan. Last, I apply some diaper rash cream.
At least, when you buy the diaper rash cream you don't have to pretend to have a baby at home, which what I do. 
But the best treatment is to thicken things up so that you don't get the burn so much. Hard to do!