Several factors can cause a sebaceous cyst to form, such as hormonal changes during puberty or skin infection and injury. These cysts can cause symptoms like pain, swelling, and redness.

Pimple Popper, shared what she called one of her "favorite" treatment videos of all time, in which she drained a ... Though the cyst isn't technically infected, Lee said she refers to ruptured ...

It is also a condition that can run in families. Usually sebaceous cysts aren't harmful, but occasionally they can become infected (which makes them sore ). They can also look unsightly ...