My husband is not in 6-mp, but he has always had problems with warts. He needed to go the pulsed dye laser treatment route to remove plantar warts on his feet (treatment was about 1 year). He had tried freezing, the acid, going to a podiatrist and getting him to cut it out, etc. Only thing that has worked to get rid of them for him is the pulsed dye laser. My husband struggled with warts even before he was diagnosed with crohn's and put on remicade and prednisone.
I have noted that in general, people with crohn's seem to get more warts, and that they find it harder to get rid of the warts as well. It's almost like for people with Crohn's, their immune systems just don't notice that the warts are viral.
I think it may have to do with the underlying immune system malfunction that causes Crohn's that also makes you more susceptible to warts and makes it harder to get rid of them. I personally don't think it is specific to 6-mp. I don't have any hard facts for this theory, this is just based on my observation over time.
Husband with Crohn's
Diagnosed March 2003 Ulcerative Proctitis
Diagnosed March 2008 Crohn's & C-diff, hospitalized 45 days
Crohn's in Remission since June 2008
C-diff recurrence Sep 2009
Reactive Arthritis Nov 2009
Currently c-diff free
Osteopenia of spine (Mar 2010)
Canasa (1gm), Lialda (4.8 gms), Remicade (8 weeks)
Currently In Remission