Pilar cysts are also known as trichilemmal cysts ... such as an MRI, CT, or ultrasound scan. It is unusual for some cysts, such as skin cysts, to cause pain unless they rupture, become infected ...

In a new Instagram video, Dr. Pimple Popper pops a pilar cyst filled with textured, white "cheese ravioli" goop. During the procedure, the patient video chats with a loved one who watches the ...