Did you have fever and body 3 , 4 or 5 days back?? If yes , and if your rashes are in the form of fluid filled blisters and vesicles , then probably points towards chicken pox . But better to consult a physician for a closer physical examination.
Next Steps
see if the number of blisters are increasing day by day.
Health Tips
not necessary that there has to be fever along with the rashes. the rashes usually starts a day or three after the fever.