When should you go to the doctor when you have a blackhead on your nipple?

If you have a blackhead on your nipple that persists despite home treatment, shows signs of infection (such as increased redness, swelling, or pus), or is accompanied by pain or changes in the surrounding skin, it's important to see a doctor. Additionally, if you notice any unusual changes in the appearance of your nipple or breast tissue, or if you have a family history of Breast cancer, consult a healthcare professional for further evaluation. Regular check-ups can help ensure any concerns are addressed promptly.