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Bubble like lesions on the skin can be possible Molluscum contagiosum
which appear like pearly white bubble like structures. It can be spread by skin to skin contact. Other lesions can be skin infections like pemphigoid
as well if there is severe infection, redness
and pain as well. In Molluscum contagiosum, usually no treatment is required but if you want to get it removed you can consult a Cosmetic surgeon and get them removed by laser therapy
. This problem spreads among children by contact so there is hardly any way to prevent it when they are all together. Just keep good hygiene of your daughter as much as possible. Give her regular baths and keep her hands clean before eating food as much as possible.