Hi, and thanks for your medical question on eHealth forum!
Please get the lesion (I am referring to it as a rash) examined. You will not be wasting anyoneâs time and it is important for your health. So go ahead-thatâs what doctors are for.
Certain breast rashes are specific to breast like inflammatory breast cancer, Pagetâs disease of the breast, mammary duct ectasia, and mastitis. Other causes of rash on the breast can be psoriasis, atopic dermatitis, seborrhagic dermatitis, fungal infection, dryness, and eczema.
Please discuss this with your doctor. It is difficult to comment further without examining the rash. Hope this helps. Take care!