<human>: hi po. i am having a lump on my right armpit. i used to have some before but this time, it is comparably bigger than what i used to have. it started about 3-4 days ago during my first day of my monthly period what might this be and what could be an immediate remedy? thank you very much!
<bot>: HIT hanks for posting your query.  It could be either a Lymph node or Lipoma or sebaceous cyst. 1. Lymph Node : These are normally present in the armpit, and they enlarge in size if there is any infection, trauma or inflammation in the hand, arm or chest. 2. Lipoma : Is a localized collection of fat. 3. Sebaceous cyst : are closed sac like structure that occurs due to blockage of oil secreting glands under the skin.  The evaluation and the treatment depend on what is the swelling. You need to get a test called FNAC (Fine needle aspiration cytology) which will tell what is the swelling.  Kindly get it done and revert. Hope this information was useful to you.