Not every lump is filler. And not every filler lump dissolves — some are an immune reaction, and enzyme alone won't fix those. Imaging tells the difference before anything is injected.
A palpable bump after filler can be displaced product, fibrotic tissue, or a delayed inflammatory nodule — and they feel similar on examination. Only the first responds well to hyaluronidase on its own. Ultrasound characterises the lesion before enzyme is placed, which determines whether dissolving is the right treatment at all.
They present the same way. They are not the same thing, and treating them identically is why some nodules never resolve.
Nothing on that list can be distinguished reliably by touch. A firm lump feels like a firm lump. That's the argument for imaging — not that ultrasound makes dissolving more precise, but that it establishes whether dissolving is the right treatment before any is given.
These appear weeks, months, or occasionally years after injection — frequently triggered by something that activates the immune system. A viral illness, a vaccination, a dental procedure. Patients often mention one of those in the week or two before it appeared, without realising the connection.
Firm swelling at an old injection site. Sometimes red, sometimes tender, sometimes warm. Can affect several sites at once.
The problem is the body's reaction to the product, not the product's position. Removing some of it doesn't switch off the response.
Management usually involves intralesional corticosteroid to reduce the inflammation, sometimes antibiotic therapy where a low-grade biofilm is suspected, and hyaluronidase to remove the material provoking it. The combination and sequence depend on how it presents.
What doesn't work is repeatedly dissolving it and hoping. That's the pattern patients describe when they arrive here after three rounds elsewhere — and it's why identifying the type at the start matters more than the technique used afterward.
Ultrasound guidance for filler complications is increasingly considered best practice, and it remains uncommon in Orange County. Here's what it changes in practice.
The complaint after a bad dissolving experience is usually the same: the lump went, and so did everything around it.
Hyaluronidase spreads. Injected without knowing where the target sits, it disperses through the tissue plane and dissolves whatever hyaluronic acid it encounters — including filler that was placed correctly and doing its job.
Imaging doesn't eliminate spread, but it means the smallest effective volume goes into a known location rather than a larger volume into a general area. That's most of the difference.
Seek immediate medical care if you develop sudden severe pain at or near an injection site, skin that looks white, mottled, or dusky, any change in vision, or rapidly spreading redness with fever.
These can indicate vascular compromise or infection rather than a nodule, and both are time-critical. A slowly appearing firm lump weeks or months after treatment is a different situation entirely — that's what this page is about.
Most nodule corrections here involve filler placed at another practice. That's not unusual and it isn't awkward.
Bring whatever you have — product names, dates, photographs, anything an injector told you. It helps. But imaging establishes what's present regardless, and plenty of patients arrive with no idea what was used. That's workable.
What's more useful than records is the timeline: when the lump appeared, whether it's changed, and what was happening in your life around then. That last question is how inflammatory nodules get identified.
The patients who arrive most frustrated have usually had the same lump dissolved two or three times without it resolving. In most of those cases it isn't a dissolving failure — it's an inflammatory nodule being treated as a deposit. Scanning it first takes ten minutes and changes the answer often enough that I'd rather not treat any of these blind.
How do I know if my bump is actually filler?
Imaging is the only reliable way to establish it. On examination alone, a filler deposit, fibrotic tissue, a cyst, and an inflammatory nodule can feel similar. High-frequency ultrasound distinguishes them by their appearance and behaviour on the image. This matters because the treatment for each is different, and hyaluronidase does nothing for a bump that is not hyaluronic acid filler.
Do all filler nodules need dissolving?
No. If the bump is fibrosis, dissolving will not help. If it is an inflammatory nodule, enzyme alone is frequently insufficient and management is different. And some small deposits settle without intervention. Determining which situation applies is the reason for imaging before treatment rather than after a course of enzyme has already been given.
What is a delayed-onset filler nodule?
An inflammatory reaction to filler occurring weeks, months, or occasionally years after injection. It is frequently triggered by something that activates the immune system — a viral illness, a vaccination, or a dental procedure — and it presents as firm, sometimes red or tender swelling at a previous injection site. It is an immune response to the product rather than simply displaced filler, which is why treatment differs.
How is an inflammatory nodule treated differently?
Hyaluronidase alone is frequently insufficient because the problem is the inflammatory response rather than the volume of product. Management commonly involves intralesional corticosteroid to reduce the inflammation, sometimes antibiotic therapy where a low-grade biofilm is suspected, and hyaluronidase to remove the material provoking the reaction. The sequence and combination depend on presentation. Repeatedly dissolving an inflammatory nodule without addressing the inflammation tends not to resolve it.
Can you treat nodules from filler placed at another practice?
Yes, and most nodule corrections at Plump involve filler placed elsewhere. Bringing any record of what was injected and when is helpful, but it is not required — imaging establishes what is present regardless of whether the history is known.
Will dissolving leave me hollow?
It can, when enzyme is placed blindly and spreads beyond the intended area, dissolving correctly placed filler alongside the problem deposit. Imaging reduces this substantially by identifying exactly where the target sits, allowing the smallest effective volume to be placed into it rather than into the surrounding region.
How quickly does a nodule resolve after dissolving?
Simple filler deposits frequently reduce substantially within 24 to 72 hours. Larger or older deposits may require more than one session. Inflammatory nodules follow a slower and less predictable course, and are assessed over weeks rather than days.
When can I have new filler after a correction?
Generally two to four weeks after dissolving, once tissue has settled and any inflammation has resolved. Where an inflammatory nodule was involved, longer is usually appropriate, and whether to place filler in that area again at all is a decision made individually.
What if the lump is something other than filler?
Imaging identifies it and treatment follows accordingly. Fibrotic tissue may respond to subcision or intralesional steroid. A cyst or other lesion is managed on its own terms or referred. Hyaluronidase is not given where filler has not been confirmed, since it has no effect on tissue that is not hyaluronic acid.
Complex corrections and second opinions welcome. Filler placed at other practices routinely treated.
4667 MacArthur Blvd, Suite 310 — Newport Beach, CA 92660
(949) 568-7544 — info@plumpmedicalspa.com
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