What Is a Dermoid Cyst? A dermoid cyst is an abnormal growth of non-cancerous tissue under the skin. These cysts may contain hair follicles, skin tissue, sweat, and oil. Sometimes cysts also contain ...

Pineal cysts can occur in the brain’s pineal gland. While most people with pineal cysts never experience symptoms, some may develop headaches, vision changes, or sleep disturbances. Pineal cysts are ...

Case in point: Her most recent Instagram video, shared Tuesday, that shows the removal of a pilar cyst (they often grow in hair follicles and are filled with keratin), using what she described as a ...