Although many surgeons give steroids for swelling there is little scientific evidence that the total swelling is decreased after surgery using this approach. That being said there is good evidence that pain and nausea control is better when short duration steroids are given - that is, less narcotic pain medicines are generally required. There are certainly risks with giving steroids for more than 3-4 days ( the more days - the more risk), including increased risk of infection, emotional lability, hypertension, etc). My own practice is either no steroids if an office procedure, or if done in a surgical center a single IV dose at the time of surgery is given to decrease immediate post operative pain and nausea.