Cosmetic surgery is becomingly increasingly common. With this trend, it is becomingly increasingly talked about. I would encourage you to have a frank discussion regarding this with your friend. In addition, encouraging him to have a frank discussion with his primary care doctor
would also be of benefit.
Cosmetic surgery alone is not a sign of a psychiatric condition. While debatable, many people have valid concerns regarding their appearance and gain significant increase in self-esteem and confidence by the procedure. In these cases, this can drastically improve one's psychiatric state.
The condition we often worry
about in people pursuing cosmetic surgery, often with repeat cosmetic surgery, is body dysmorphic disorder. This is a disorder in which the patient is excessively concerned regarding a perceived flaw in his or her appearance. By definition, this concern will result in impairment in social, occupational or emotional functioning. Patients often have concomitant psychiatric disorders like eating disorders or depression.
There is no specific way to diagnose the condition. A psychiatrist
can be of help. In general, if you have concerns that his preoccupation with his legs are significantly affecting his life functioning, that you should discuss this with him.
Keep in mind all patients should see their primary care doctor prior to any surgery for "medical clearance." Evaluation of this will/should include addressing this topic.