A nevus sebaceous is a rare birthmark present on the face, neck, forehead, or scalp. Most are benign and unchanged through life, but some may develop tumors. A nevus sebaceous is a rare type of ...

It’s easy to panic when you notice a lump on your skin. You may wonder if it’s melanoma or another type of skin cancer. But sebaceous cysts — slow-growing bumps under the skin that can appear on the ...

A cyst is a small pocket of tissue often filled with fluid or pus. It can occur due to an injury, infection, or other issues. They’re usually benign but may need treatment for complications. A cyst is ...