It is difficult to tell what you could have, but it is possible to have scleroderma
--a disease often affectibing people age 3050 yrs old and more often in female.
Since I am limitted to 400 characters in this answer box, i would recommend checking out this link: http://www.Nlm.Nih.Gov/medlineplus/ency/article/000429.Htm for additional info/leisure reading. If u have more ?, repost. Good luck.