My mother had the beginnings of Scleroderma (hers on the inside of her body) and didn't know it when she had her full face lift. Scleroderma is a terrible autoimmune disease that affects the collagen tissue and has a death sentence attached to it.

The face lift turned out phenomenal and her scleroderma eventually went into remission. Just goes to show you never know.....

If something will make you happy and you can afford it then go ahead.
Check with your doctor first and get his/her opinion on how it will affect your immediate health.