human papilloma virus
"I got anal warts this year. I was given 5% imiquimod cream and told to apply it 3x a week. I was a little bit afraid based on the reviews because people said it hurt very badly after a few applications. This did not happen to me after 4 applications, but also i didn't notice any progress. I did some research, and learned that imiquimod does not penetrate the skin all that well , and found an article showing success rate with imiquimod increased when the skin was "permeabilized" with salicylic acid. I started treating on Tu/Th with  salicylic acid and then applying imiquimod M/W/F. It hurt like hell but the warts were gone in 2 weeks. Not for the faint of heart, but worked quickly."