Sebaceous cyst is the common type of noncancerous cyst on the skin. The cyst are growth in the body that might contain semiliquid or liquid material. This type of cyst are commonly found on the torso, neck & face. These cyst grow slowly and is not life threatening. The cyst may become uncomfortable if unchecked. When you notice a sebaceous cyst on your neck, face or torso, make sure to visit the Private Dermatology Clinic London and get treated at the earliest. Causes of sebaceous cyst It is form out of the sebaceous gland. The gland produces an oil known as sebum that coats the skin & hair. Cyst can grow when the gland becomes blocked or damaged. It generally happens because of trauma in the particular area. The trauma can be scratch, skin issue like acne or a surgical wound. The cyst grows slowly and the trauma might have occurred months or weeks before the cyst get noticed. Other causes of sebaceous cyst might include deformed ducts, destruction to the cells during ...