Nasolabial folds fillers: What are the downsides in having these injections?

This is a very common site to have filler injections, you should seek a consult with a cosmetic dermatologist or plastic surgeon since you have so many questions that are very easily answered in the office.  Fillers are used daily in these areas with very good results that are natural with long term improvements.  I wish you the best, Dr. Emer.

You raise alot of questions.If the folds are symmetric then you would put half the syringe on one side and the other half on the other.Can there be lumps and irreguilarities.Sure there can.Then how long will it last.I have gone more and more into injecting a patient's own fat since it is your tissue and there is no rejection.Also you are not limited to say 1 or 2 cc's.so I think it is better.

The most important question to ask is whether injection of the nasolabial fold is right for you.  This of course requires at least a photograph, and better yet a consultation in person.  Properly done fillers to the midface by a board certified dermatologist or plastic surgeon should give a cosmetically satisfying results with only a small chance of complications.