Feel like I've posted this section about 49 times recently, anyhow, This afternoon ds age 3 started to scratch his bum but not intensely. I had a look and couldn't see anything, his anus was quite red though and sore looking. At bed time he dozed off and was asleep for all of 20 mins before squirming around and waking himself up crying about a "sore itchy bum", he was actually quite distressed about it. I gave piriton and calpol and tried anusol cream on it that I had for my piles. He was up feeling uncomfortable for well over an hour but has managed to go bk to sleep. Is it definitely worms? He's never had them before and he's my only child so no experience. I had another look when he was awake and upset but still couldn't see anything other than a red inflamed bottom. I have 3 questions, one is how long does the medicine take to work? And 2- do you have any other suggestions about how to relief the itch itself in the mean time? 3 - do I need to keep him off nursery? Obviously I can't get him the medicine until tomorrow. Thank you