Hi, i have developed a sort of a red round kind of like a ring rash around my lower bottom, i am embarrassed to go to doctor about it not sure what is?

It: needs to be seen to even make a presumptive diagnosis don't be embarrassed see your physician unless of course the rash is a result of something you did and let us know and we will try to help you good luck

We can't diagnose : this with the available info. These lesions need to be visualized & a history needs to be obtained in order to make an accurate diagnosis. Sometimes lab testing or biopsy is necessary. Get up your courage if it isn't resolving.