Heat rash is a skin irritation caused by excessive sweating during hot, humid weather. They look like red cluster of pimples or small blisters. It is more likely to occur on the neck and upper chest, in the groin, under the breasts, and in elbow creases.The best treatment for heat rash is to provide a cooler, less humid environment.It is important to keep the affected area dry. Avoid using ointments or creams because they keep the skin warm and moist and may make the condition worse.
If it persists, it would be best to see your doctor for further evaluation and management. Take care and keep us posted.
I am 60 and have had autoimmune problems but never had a diagnosis. This skin think has happened between four and six times in the past 20 years. This time I am beet red from breasts to knees, not sign of oozing, just bright red with stinging, burning sensation that is awful. My skin is hot to touch where it is red. It is not heat related as it is not a bit warm out but it feels better if I stay in 55 degree or less temp room. FR b uswK>