DD has 2 verrucas which are very unslightly but never caused any pain. I took her to the docs a couple of weeks ago as they were getting bigger and was prescribed Salactol (Lactic acid). Have been treating religiously every night for 2 weeks now (and what a PITA it is!). For the past 2 or 3 days she has been complaining they are sore, itchy and has woken a couple of times in the night with it. Should I persist or take her back to the docs? Not sure if this just means the acid is working - they don't look any different to me yet.