Itchy red rash under armpits
Hello, everyone. The day before yesterday my right armpit was a bit itchy, but I didn't pay too much attention to it. Yesterday night I realized that both my armpits were red. Only the right side itches, but both sides are red. It is very light in color right in the middle of each armpit, but the surrounding areas are red. I have been spraying Cortizone on them, and I am worried about what it is. My mother suspected it may be my deodorant, so I've stopped using it for today and will continue to do so to see if it improves... just for basic knowledge, I am a 17 year old female and had some problems in which medication was needed; as a side effect, I experienced a bit of a growth stump and am 'a late bloomer', could this rash have anything at all to do with puberty or perspiring too much under my arms?