hi, my 14yr old son has a verruca on his foot for nearly a year now, iv tried the freezeing technique, which didnt work, ive brought him to the chiropidist, and he underwent 2 sessions of trying to burn it off, but he was in so much pain that i had to bring him to the hospital to get him a painkiller, as u can imagine i couldnt put him through that again, he has freidreichs ataxia, so haveing this verruca is causeing him more problems with his mobility, the waiting list for to have it surgically removed is months away, can you advise me on how to get rid of this please