A list of causes for you sir
Hello sir and welcome.
Thank you for writing to us.
I can understand how this can be slightly restricting at times, and shall surely help you by listing the causes for such a presentation, they are:
-Exercise or activity-related injury
-Runners nipple (especially seen in joggers)
-Infection of the breast tissue called mastitis
(fluid-filled sac which can be palpated)
(rare growth in men)
Please write back to me with a more elaborate description of the chest muscle, nipple, areola
region (eg. lump, swelling, oozing, etc.). I hope you find my response helpful, please feel free to write back to me for any further clarifications, I would be more than happy to help you.