Ds started with chicken pox on thursday, he will be 1 on the 26th. He only had a few until saturday then loads came out and are still coming out. He has clusters of them all round his nappy area, but he has a big one by his shoulder blade that has a red ring around it then a red line coming off of it, would you say this is infected?? My dd had chicken pox 2 weeks ago and she never had anything like this but was very poorly with it. Any advice please?? Thanks.