My 6yo twins have come up in spots that look like the start of chicken pox but they've already had it! They're all on their legs/stomach areas, and have little white heads on some of the spots, no blisters. Just noticed them this evening. Wondering if i should just wait and see if they go away or if i should keep them off school and try and get them to the doctor's tomorrow in case it's something like impetigo as i gather they might need anti biotics if so. They said they're not itchy or painful and they have no other symptoms.