Have Urology Questions? Ask a Urologist Online.
Hello, this is Dr. David. I am reviewing your question now and will be with you momentarily.
I'm not sure what you mean by a "small knot"
it sounds like it is under the skin.
it could be a blocked skin pore or a subaceous cyst.
you can get subaceous cyst anywhere in your body.
after sex, it is important to wash with soap and water to prevent blocked skin pores. are you doing this?
small and hard spot under the skin sounds like a subaceous cyst and most likely not from injury during sex.
washing with soap and water after sex is a good idea.
let me know if you have other questions.
if done for now, please leave positive rating of 3-5 stars so I can get credit for helping you today
we only get credit for helping clients after positive feedback
you may have to scroll up or down to see the ratings area.
you can always reach me directly with "a question for Dr. David" in the medicine or oncology categories if you have other questions
here is my website if you need to reach me:
Thanks for using JustAnswers.com