A cyst is a closed pocket under the skin filled with some type of fluid or other material. Cysts may form inside the body (for example, on the ovaries in women) or on the outside, such as under the skin. Lots of skin bumps, though, are not truly cysts, even though many people commonly refer to them that way. These hard nodules that appear beneath your skin may be cause for concern, but most of them are harmless. However, cancerous cysts do occur, so have any growth that is ca... what wedding items to wear for mature brides over 50/60