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Hello from JustAnswer.
How long has the nipple been tender?
Have you tried anything to relieve the tenderness?
Thank you for the additional information.
There are many different possible causes of sore nipples. Many causes are benign, such as excessive friction on the nipple, local infections, excessive dryness, or an allergy/sensitivity. However, there are some more significant problems that can cause nipple soreness, such as inflammation or tumor of the nipple/breast or systemic conditions, such as hormonal changes.
When the soreness has been of short duration, it is reasonable to try some home interventions. The polysporin was a reasonable medicine to try for control of a local infection. Since this did not help, it would be reasonable to try different home interventions. It may help to use a moisturizing cream or a hydrocortisone cream, which can help with dryness or an allergy/sensitivity respectively. If these home interventions are not helpful, then it would be reasonable to see your doctor for a proper evaluation.
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