I have a black bump on my lip.i get it almost every month now.it comes and it goes. do u kno what it could possibly be?

Cyst: This is probably a mucous cyst, but you should see your dermatologist for treatment and evaluation to get the correct diagnosis.

Seek consultation: A black bump on the lip could result from a number of issues. It could be a simple problem to manage such as a small tangle of blood vessels or it could be something more serious like a small skin cancer. A consultation with a dermatologist or facial plastic surgeon will help determine what the spot is and how to best remove it.