Water. Lots.
CLEAN but dont SCRUB SCRUB SCRUB. Guys tend to think "more is better" and scrub TOO hard - thats is NOT good.
Also, take some anti-inflammatory drugs, like Advil. That will keep the inflammation down.
You can use ice on an very inflammed legions.
Also, a dermatologuist can provide temprary relief with localized injections which will lower the inflammation (I THINK they inject cortisone, or something like it, right into the lesions).
If you have any real lesions which are like, well, broken skin, ... something where there need to be :healing:" on the surface, then be sure to use an anti-bacterial soap. Keep the surface clena and disinfected that way.
Just hang in there. It will get better.