Thats what I was gonna say, If its a mild case then there is a small chance of reaccurance. My little girl had it last Christmas (she was nearly two) and she had a VERY severe case of it, it was everywhere. But her cousin she caught it off, had only a very mild case.
My son had a very mild case when he was about 12 months old, then got an extremely severe case when he was about 4 - he was covered from head to toe. Best place for him was in the bath - it stops the itching for a while, and playing in the water always took his mind off everything else anyway. Then we played a gam putting on calamine lotion - it was fun really!!