In short, yes. Those with diabetes and uncontrolled sugar levels ARE at high risk for rashes. https://my.clevelandclinic.org/health/articles/12176-diabetes-skin-conditions Also, hormones and body heat are related. And diabetes also can have complications of blood vessel damage which can affect sweat glands. If those aren't working properly, The body can not let out the heat and cool efficiently. Have you talked to your doctor? And what is your normal sugar level? Do you monitor? Take medication?