Fever with a rash we need to consider several things. First one is as you correctly pointed out is exathematous fevers like chicken pox. Chicken pox is a virus and we call them as strains. As humans we have several races, these viruses have strain. Each strain is different and hence, theoretically chicken pox can occur several times. But, each time severity will be progressively less. The striking feature of Chickenpox is these eruptions will be of various sizes and shapes particularly in the back and legs. They rapidly evolve. Other conditions we have to think of is all types of viral fevers. Fortunately they are self limiting, will disappear without treatment If it is a bacterial condition, fever will will be gradually increasing, pain will be there, the yelllow heads you have described will look like frank pus surrounded by redness. She will become very dull Worms in the gut also can cause similar problem Caries teeth and similar tooth infection can also play a problem. Outside food, dirt in the hand can go via her mouth and result in a rash Dust, playing near plants, The dress you have used, any insect bites, the chemicals you have used for bath and washing clothes and finally the water you have used for washing and bathing can all lead to a rash. In conclusion how do we go about it If there is itching, high fever of more than 103 F it is better to see a doctor. If there is oozing of fluids or pus formation, the child will require antibiotics. For fever paracetamol and for itching simple sponging with ordinary (tepid) water is sufficient