 [ Symptoms ] can powder with cornstarch like gold bond baby powder help with a 3 year olds heat rash under her arms  my granddaughter has a rash under the arms that looks like a heat rash can powder like gold bond baby powder with cornstarch help she is 3 years old thankyou [ Disease ] more of anxiety yes but still many other cardiac and abdominal causes need to be ruled out by doing all the necessary investigations ecg and ct abdomen are the minimum required