Imiquimod
"I had GW about 5 years ago, which has re-occurred again now.  Reoccurance is largely due to poor immunity.  The pain from broken, damaged skin Aldara causes is unbearable, but worth it because it does work - slowly but eventually.  I found relief by washing the area the next morning, or next day with a weak solution of apple cider vinegar diluted with warm water. This really helps soothe the skin and relieves itching. You can repeat as often as necessary"