I have rather a large bust and over the last couple of days have had a rash in the spacing between my boobs and also along the underside of one of them. It is quite red and a bit itchy but generally just a bit sore. I've tried ensuring that I am wearing cotton clothing and not overheating. I ensure I wash regularly and dry thoroughly and have tried talcing the area incase it is a sweat problem (not sure if this is the right thing to do or not) but am at the end of my teather. My bra's aren't underwired as I don't find them comfortable. I do suffer from Eczema but it doesn't seem like that. Any idea's?