Thank you for the info Ma'am.
Hi,
First of all, this is not at all related to breast cancer. Sometimes a little cyst or pimple can form on the areola or nipple, like on any other part of the body..
The nipples contains glands like the skin of the face. If the pores get clogged it can become infected and manifest as pimple.You should not touch or try to squeeze the pimple, just keep the area clean, apply warm compresses and Neosporin and see if it goes away in a week or two like the first one did. If it does not,then you should see your doctor or a dermatologist who can prescribe a medication to prevent future development.
Best wishes....