Blisters inside of my lip after Juvederm injections. Any suggestions? (photos)

Blistering on the lips after filler is not a common complication.  Blisters are most likely due to herpetic infection and can be present on the interior, aphthous ulcer, or the exterior of the lip.  In patients with a history of herpes labialis infection, it is a good idea to have oral therapy if needed after any procedure performed around the mouth.  Treatment of these types of lesions can involved topical or oral anti-virals.  For soothing pain, applying a calcium based anti-acid tablet directly to the area can improve the pain acutely.  Blistering could also theoretically occur from excessive swelling of the lip but this would generally not be localized.

I suggest going back to your physician to get a formal evaluation to determine if this is a cold sore or apthous ulcer versus filler migration/swelling or other.  Best, Dr. Emer.

It is possible that the injections have triggered a cold sore. I would return to your treating physician for examination to confirm the diagnosis and best treatment.  Best, Dr. Green