Extreme Swelling After Juvederm- Is This Normal? I'm Very Worried. (photo)

This could be a few different issues, but the extreme swelling you have is probably angioedema.  This will respond to steroids usually.  The cause for this is not always known, but often related to someone that is taking an ACE inhibitor for their blood pressure.  Other things that can cause this is a hematoma, rare allergic reaction,  or too much filler placed.  

Thanks for the photo. This swelling is more than we usually see and being one sided I doubt that it is allergic or caused by a problem with the product. It is more likely some deep bleeding that we cannot see or some other complication of the injection itself. I would sleep on at least three pillows to minimize further swelling and see your doctor ASAP.

From the picture the swelling you have is more then the usual that is expected from an injection of Juvederm to the lips. Although swelling does accrue it is usually less then you have encountered and is more uniform on both sides of the lips. The presentation you have makes me wonder if you have a hematoma or bleeding into the area due to injury to one of the blood vessel in the area. It is hard to say since no obvious bruising is noted but can't tell inside you mouth. Another possibility is an allergic reaction or infection which are less common! You should go see your doctor as soon as you can. If it gets worse or you have breathing problems you should go to the ER.

If it is only due to over injecting the area with Juvederm the use of Vitrase an enzyme that dissolves HA will be helpful once the swelling subsides!!!

Good Luck!