Can some facial rejuvenation techniques cause iatrogenia?

This article studies the changes produced with age in the different facial tissues, analyzes how these tissues can be affected by surgical manipulation, and sets out certain principles that should be kept in mind during facial rejuvenation surgery. Surgeons are alerted to the possibility of causing iatrogenia, in the sense of interfering with normal facial expression and accelerating the normal aging process. We present two techniques that use these principles.