How to Get Rid of a Lump After a Steroid Injection

A lump that appears after a steroid injection is almost always one of a few predictable things, and how you get rid of it depends entirely on which one you’re dealing with. Some lumps are temporary flares that resolve on their own within days. Others are longer-lasting changes to the tissue beneath your skin that may take months to improve or, in some cases, require medical intervention. The first step is figuring out what kind of lump you have, because the treatments are completely different.

Why Lumps Form After Steroid Injections

Steroid injections, particularly corticosteroid injections used for joint pain, tendinitis, and inflammatory conditions, can produce lumps through several distinct mechanisms. The most common short-term cause is a steroid flare, where the injected medication crystallizes inside the tissue and triggers a temporary inflammatory response that can feel worse than the original problem.¹ A longer-lasting type of lump comes from subcutaneous fat atrophy, where the steroid breaks down the fat layer beneath your skin and leaves a visible dent or firm area. A third possibility, specific to injections around tendons, is a fluid-filled cyst that develops weeks or months later.

These are not rare complications. A systematic review found steroid flares reported across 19 separate studies, and a large pediatric study documented complications including tissue atrophy and skin changes in about 2.6% of all injections.¹² That percentage may sound small, but given how many steroid injections are performed every year, it adds up to a lot of people looking down at a bump or divot on their arm, knee, or shoulder and wondering what to do about it.

Steroid Flares and Short-Lived Lumps

A steroid flare is the most common reason for a lump appearing within the first 24 to 48 hours after an injection. What happens is straightforward: the corticosteroid medication can form tiny crystals inside the tissue, and your body reacts to those crystals with inflammation, swelling, and pain.³ The area may feel warm, tight, and more painful than it was before the injection. This is not a sign that something went wrong with the procedure. It is a known, self-limiting reaction.

The good news is that a steroid flare resolves on its own, usually within two to five days, without any specific treatment. During that window, you can manage the discomfort with ice applied to the area for 15 to 20 minutes at a time, over-the-counter pain relievers like ibuprofen or acetaminophen, and rest. Avoid massaging or pressing on the injection site, since that can push the steroid crystals further into surrounding tissue and make the inflammation worse or last longer.

The key question is how to distinguish a flare from something more concerning. A flare peaks within the first day or two and then steadily improves. If the swelling, redness, or pain is getting worse after 48 hours rather than better, or if you develop a fever, that is a different situation and warrants a call to your doctor. Infection after a steroid injection is uncommon, but it does happen, and the early symptoms can mimic a flare.

Fat Atrophy Lumps and Skin Depressions

If your lump showed up weeks after the injection rather than days, or if the area looks more like a dent or a sunken patch than a raised bump, you are probably dealing with subcutaneous fat atrophy. This happens when the corticosteroid breaks down the fat tissue beneath your skin. The mechanism involves the steroid suppressing the cells that maintain your connective tissue (fibroblasts), ramping up enzymes that break down collagen, and blocking small lymphatic channels in the area.⁴ The result is a loss of tissue volume that creates a visible indentation, sometimes accompanied by lighter skin color over the spot.

This type of change is most often seen with triamcinolone acetonide, one of the most commonly used injectable corticosteroids.⁵ It tends to happen when the steroid is deposited too superficially, just under the skin rather than deep in a joint or tendon sheath, or when the steroid leaks backward along the needle track as it is withdrawn. Crystal deposition outside the intended target is the primary culprit.⁴

Fat atrophy is a more stubborn problem than a flare. It does not resolve in days. In many cases, the tissue gradually recovers over several months as your body rebuilds the fat and collagen that were lost. The timeline is frustratingly variable, though. Some people see improvement within three to six months; for others, the dent persists for a year or longer. A small number of cases become permanent without treatment.

What You Can Do at Home for Persistent Lumps

For a lump caused by fat atrophy, home remedies are limited but not useless. Gentle massage of the area, starting a few weeks after the injection once any acute tenderness has resolved, may help by promoting blood flow and encouraging the tissue to remodel. Some people find that warming the area with a warm compress before massage makes it easier. The evidence for massage speeding recovery is anecdotal rather than clinical-trial-grade, but it carries essentially no risk and may help with the firmness some people feel at the injection site.

What you should avoid is re-injecting the same area or applying topical steroid creams over the site. Both can make atrophy worse. You should also resist the urge to aggressively knead or dig into the lump. The tissue beneath the skin is already weakened, and rough handling will not accelerate its recovery.

For the hypopigmentation (lighter skin) that sometimes accompanies fat atrophy, there is even less you can do at home. The color change results from the steroid reducing the function of melanocytes, the cells that produce pigment.⁴ This tends to improve as the steroid’s effects wear off, but the timeline can stretch to many months. The lighter patch is generally more noticeable in people with darker skin tones, and sun exposure to the rest of the surrounding skin can make the contrast more visible.

Medical Options When Lumps Do Not Resolve

If a lump from fat atrophy has not improved after six months or so, or if the cosmetic appearance is bothering you, there are medical treatments worth discussing with your doctor. The most studied approach for significant steroid-induced atrophy is autologous fat grafting, where a small amount of fat is harvested from another part of your body and injected into the depressed area. Case reports have documented successful correction of both the volume loss and the overlying skin changes using this technique.⁴⁵

Fat grafting is a minor surgical procedure, typically done under local anesthesia. It is not a first-line treatment for every small dent, but for deeper or cosmetically prominent atrophy, particularly on visible areas like the forearms, hands, or face, it offers a way to restore volume that the body may not replace on its own. The grafted fat does not always survive completely, so some people need a second session, but the results are generally durable.

For lumps that are firm nodules rather than depressions, the approach depends on what the nodule actually is. A doctor may use ultrasound to image the lump and determine whether it is a granuloma (a ball of inflammatory tissue), a calcification, or something else entirely. Some granulomas respond to a different steroid preparation applied topically or injected at very low doses, which seems counterintuitive but can work when the original problem was a localized crystal deposit. Others may need to be surgically excised if they are causing persistent symptoms.

Ganglion Cysts After Tendon Sheath Injections

There is a specific scenario that catches many people off guard: developing a fluid-filled cyst after a steroid injection for trigger finger or other flexor tendon problems. A study comparing fingers that received steroid injections for stenosing flexor tenosynovitis (trigger finger) against a control group found that ganglion-like cysts formed in about 38% of injected fingers, compared to under 5% in fingers that were not injected.⁶ That is a striking difference, and it suggests the injection itself plays a role in cyst formation, possibly by altering the tendon sheath’s structure.

These cysts feel like smooth, round, somewhat movable lumps near the base of the finger or on the palm. They are not dangerous, but they can be annoying and sometimes tender. Small ganglion cysts occasionally resolve on their own over months. Larger or symptomatic ones can be aspirated, where a doctor uses a needle to drain the fluid, or surgically removed if they keep coming back. If you had a steroid injection for trigger finger and noticed a new lump in the weeks that followed, this is a strong possibility worth mentioning to your hand specialist.

When a Lump Needs Urgent Attention

Most post-injection lumps are not emergencies, but a few patterns should send you to your doctor without waiting. Increasing redness spreading outward from the injection site, worsening pain after the first 48 hours, warmth over the lump combined with fever or chills, or discharge from the injection site all raise the possibility of infection. Joint infections after steroid injections are rare but serious. A review of 278 cases of complications from corticosteroid injections found that in roughly 40% of cases where things went wrong, errors such as inadequate sterile technique, missed infections, or injections performed without a clear indication were identified.⁷

You should also see your doctor if a lump is growing rather than shrinking over weeks, if it is hard and immovable, or if you have numbness or tingling in the area that was not present before the injection. These findings do not necessarily mean something dangerous, but they warrant imaging to rule out a structural problem. An ultrasound or MRI can usually distinguish between a benign granuloma, a cyst, fat atrophy, and the rare possibility of something unrelated to the injection that happened to become noticeable around the same time.

Reducing the Risk With Future Injections

If you have already developed a lump after a steroid injection and expect to need more injections in the future, there are practical steps to lower the chances of it happening again. The most important ones involve technique and drug selection, which means having a conversation with the provider giving the injection rather than just accepting the same approach as last time.

Injection depth: Fat atrophy is far more common when the steroid ends up in superficial tissue rather than deep in the target structure. Ultrasound-guided injections allow the provider to verify needle placement in real time, reducing the chance of depositing the drug in the wrong tissue layer. The pediatric study that tracked over a decade of ultrasound-guided injections found a complication rate of only 2.6%, which compares favorably to older reports using landmark-guided technique.²
Drug choice: Triamcinolone acetonide is a particulate steroid that tends to persist longer in tissue, which is partly why it is associated with more atrophy than some alternatives.⁵ Ask your doctor whether a non-particulate steroid like dexamethasone sodium phosphate would be appropriate for your situation. Non-particulate formulations dissolve more quickly and are less likely to leave crystal deposits in surrounding tissue.
Dose and frequency: Repeated injections at the same site, especially with short intervals between them, compound the tissue damage. The review of injection complications identified overly short intervals between injections and excessive doses as recognized treatment errors.⁷ Most guidelines recommend waiting at least three months between injections at the same site and limiting the total number.
Post-injection pressure: After the injection, applying gentle pressure to the site and keeping the area still for a few minutes may help prevent the steroid from tracking backward along the needle path into superficial tissue.

How the Steroid-Anesthetic Mix Plays a Role

Something most patients never hear about is that the way the steroid is mixed before injection can affect crystal formation. Corticosteroid injections are frequently combined with a local anesthetic for pain relief, and laboratory studies have shown that certain combinations produce crystals in the syringe before the fluid ever reaches your body. When ropivacaine was mixed with betamethasone sodium phosphate, large crystals exceeding 300 micrometers formed, while the same steroid mixed with lidocaine produced no crystals at all.⁸ A separate study confirmed the pattern: lidocaine combined with non-particulate steroids consistently avoided crystal formation, while ropivacaine and levobupivacaine mixed with betamethasone produced crystals large enough to be visible to the naked eye.⁹

Why does this matter for lumps? Those pre-formed crystals act as irritants when injected into your tissue, potentially worsening the inflammatory flare and increasing the risk of granuloma formation. The pH mismatch between the acidic anesthetic and the basic steroid drives the crystallization. This is the kind of detail your doctor should be aware of when preparing the injection, and if you have had problems with flares or lumps in the past, it is worth asking what anesthetic is being mixed with the steroid. Lidocaine appears to be the safest pairing across most corticosteroid formulations.

Lumps That Are Actually Scar Tissue

One type of post-injection lump that gets less attention is fibrosis, or scar tissue formation, at the injection site. This tends to happen in people who have received multiple injections in the same area over time. The repeated cycles of tissue injury and healing produce a firm, sometimes pea-sized nodule that does not fluctuate in size the way a flare does and does not have the sunken appearance of fat atrophy. It sits there, sometimes for years, as a palpable but usually painless reminder of the injections.

Scar tissue lumps rarely need treatment unless they are in a location where they cause mechanical irritation, such as under a bra strap or at a pressure point. If they bother you, a dermatologist or surgeon can evaluate whether excision makes sense. For most people, these lumps are cosmetically minor and functionally irrelevant. Knowing they exist as a possibility just helps with the “what is this thing?” question that sends a lot of people to search engines weeks after an injection.

People who receive frequent steroid injections for chronic conditions are the most likely to develop this kind of fibrotic lump. If you’re in that category and notice a new nodule forming at a previously injected site, mention it at your next appointment. It probably does not change your treatment plan, but it is useful information for your provider to have when deciding where and how often to inject going forward.

1
PubMed Central. Adverse effects of extra-articular corticosteroid injections: a systematic review
2
SpringerLink / Pediatr Radiol. Ultrasound-guided corticosteroid injection therapy for juvenile idiopathic arthritis: 12-year care experience
3
PubMed. Septic and aseptic complications of corticosteroid injections
4
Reumatología Clínica. Treatment of Persistent Cutaneous Atrophy After Corticosteroid Injection With Fat Graft
5
International Journal of Surgery Case Reports. Autologous fat transplantation for multiple scattered steroid atrophy and hypopigmentation: A case report
6
JBJS Open Access. Ganglion Formation After Steroid Injection for Stenosing Flexor Tenosynovitis
7
PubMed Central. Septic and aseptic complications of corticosteroid injections: an assessment of 278 cases reviewed by expert commissions and mediation boards from 2005 to 2009
8
PubMed Central. Crystallization of Local Anesthetics When Mixed With Corticosteroid Solutions
9
PubMed Central. Non-Particulate Steroids (Betamethasone Sodium Phosphate, Dexamethasone Sodium Phosphate, and Dexamethasone Palmitate) Combined with Local Anesthetics (Ropivacaine, Levobupivacaine, Bupivacaine, and Lidocaine): A Potentially Unsafe Mixture