What can I do about painful lumps appearing 5 months after Juvederm?

Thank you for sharing your excellent question.  In most cases the Juvederm can be easily dissolved with a product termed hyaluronidase.  I would see your injector, or an ASPS board certified plastic surgeon in consultation to discuss. 

If you have painful lumps you need to get them dissolved with hyaluronidase.  You will most likely also need to be on antibiotics or anti-inflammatory medicines.  See the doctor who injected you for these treatments.