Rash on nipple ? (Bf)

Hey girlies so I hope this isn’t weird or anything but ill skip right to it maybe y’all have an idea of what this is:

So my bf recently got this like rash on his nipple and were not sure what it is, could it be like eczema or pysoriasis, he says it itches a lot and that’s the only part of his body that he has it

Does anyone have any cream recommendations/ suggestions/ tips or anything that might help?

Thanks!