Thanks MehtefaS for your question! The areola frequently has little lumps that appear to "come and go." These are often totally normal anatomical traits whose visibility varies according on your body's hormones and surroundings. Montgomery glands, sometimes known as Montgomery tubercles, are the most plausible explanation. They are present in everyone, albeit some people have them more than others. They are oil-producing glands that lubricate and shield the areola and nipple. They have antimicrobial qualities to maintain skin health. They could be more noticeable during your menstrual cycle (just before your period), during pregnancy, or while nursing, they frequently became bigger or more numerous. Their prominence may also be impacted by significant stress or changes in body weight. Hope this was helpful! Best wishes, Dr Ali Sajjadian