My granddaughter-in-law broke out into a rash (looks much like insect bites). It has spread. Now her 1 yr old daughter has spots in her armpit. It started out as 2 little sceeter bites...she would sai it hurts when you wouldpick her up touching under her arm. Now one looks raw, like it might have been a blister and popped, and 2 or 3 more little spots have popped up..shes had a bad cough with fever the past week but seems to be better with that. Can you give me any ideal of what this might be?