I've had one for the best part of a decade. At various times I've tried to treat it, mostly with over-the-counter gels such as bazuka. In Feb–March I had several sessions with a podiatrist, including 2 x debridlement and one quick session with a 'verruca pen' which seemed to be some sort of laser device. It was shrinking and looked like we'd conquered it, but it came back. Apparently immune conditions can make getting rid of verrucas harder, which is sort of obvious. It's the immune system that does all the work in getting rid of the verruca. So, anyone had the same issue? What should I try next?!