Condition

Granuloma Annulare

Granuloma annulare is a harmless skin condition that forms rings of small firm bumps, usually on the hands and feet. There is no scale, which is what separates it from ringworm.
At a Glance

Granuloma annulare is a harmless inflammatory skin condition. Small firm bumps arrange themselves into a ring, with normal-looking skin in the middle, most often on the backs of the hands and the tops of the feet.

The single most useful thing to know is that there is no scale. Run a finger over it and it is smooth. Ringworm is scaly and itchy — granuloma annulare is neither, and it is misdiagnosed as ringworm constantly and treated with antifungal creams that do nothing.

It clears on its own, usually within two years, in most people. It causes no harm and it does not scar.

The honest catch: treatments exist, but the evidence behind almost all of them is weak. Nothing has been reliably shown to work better than waiting, which is a legitimate option here rather than a cop-out.

Key Facts

How CommonFairly common, though many cases are never diagnosed. Around 1 in 1,000 dermatology visits.
Who Gets ItAny age. The common localised form is most often in children and adults under 30, and more common in women.
Chronic or CurableSelf-limiting in most cases. Around half clear within two years, though it can come back.
Rx RequiredNo. Treatment is optional, and often not worth it for a few patches.
ContagiousNo. It is not fungal, bacterial or viral.

Symptoms

−

Granuloma annulare is more often noticed than felt. It rarely itches, it does not hurt, and most people find it while looking at something else.

What it looks and feels like

Small firm bumps in a ring — each bump is smooth and solid, and together they form a raised circular border.
A normal-looking centre — the skin inside the ring looks and feels like ordinary skin, sometimes slightly sunken.
No scale — this is the detail that matters most. The surface is smooth. Ringworm has a flaky, scaly edge; granuloma annulare does not.
Colour that blends in — skin-coloured, pink, purple, red-brown or grey, and often subtle enough that it is easier to feel than to see.
No itch, no pain — occasionally a mild itch, but if it is genuinely itchy, question the diagnosis.
Slow, quiet spread — rings widen over months, sometimes to a few centimetres across, then stop.

Where it shows up

  • The backs of the hands and fingers, and the tops of the feet and ankles — by far the most common sites.
  • Elbows and knees, less often.
  • Widespread across the trunk and limbs in the generalised form, usually as many small bumps rather than clear rings. This form is more common in adults over 40, is more stubborn, and is the one associated with diabetes.
  • Deep lumps under the skin in children, usually on the shins, hands or scalp. Harmless, but they get mistaken for something more worrying.

How it looks on different skin tones

On brown and Black skin the rings are often violet, dark brown or grey rather than pink, and they can be very hard to see — running a finger over the area to feel the raised border is more reliable than looking. Patches that settle commonly leave darker marks for months afterwards. Those are pigment changes, not scars, and granuloma annulare itself never scars.

Light
Medium
Brown
Deep

One lookalike accounts for most misdiagnoses here. See Lookalikes near the bottom of this page.

Causes & Risk Factors

−

Nobody knows what causes granuloma annulare, and it is fair to say so plainly. What is understood is the mechanism: a type of immune cell gathers in the upper layer of the skin and breaks down some of the collagen there, which produces the ring of firm bumps. It is an immune reaction rather than an infection, which is why nothing antifungal or antibacterial touches it.

What sets that reaction off is unclear. Insect bites, minor skin injuries, viral infections, some vaccinations and certain medications have all been reported as triggers in individual cases, but no consistent cause has been found and most people never identify one. The widespread form in adults over 40 is associated with diabetes and with abnormal cholesterol, so blood sugar and lipids are usually checked when it is generalised. Rarely, widespread granuloma annulare appearing for the first time in an older adult prompts a wider check for other conditions. For the common localised form on the hands and feet, no underlying cause is looked for and none is usually found. You did not do anything to bring this on.

What Hurts and What Helps

−

What Makes It Worse

  • Honestly, very little reliably makes it worse. This is not a condition that flares with soap, heat, food or stress the way eczema does.
  • Skin injury in the affected area may bring out new bumps in some people, so cuts, scratches and friction are worth avoiding where the patches are.
  • Antifungal creams, in the sense that they waste weeks. They do nothing, and using one for a month usually means a month of thinking the treatment is not strong enough rather than that the diagnosis is wrong.
  • Sun exposure in the case of one uncommon variant that appears on sun-exposed skin. For most people sun makes no difference either way.
  • Aggressive treatment of something harmless. Strong steroids used for months on thin skin, especially the hands, cause thinning and marks that outlast the condition itself.

Daily Habits That Help

  • Time. This is the honest headline. Roughly half of cases clear within two years without any treatment, and most clear eventually. Choosing to leave it alone is a reasonable medical decision, not giving up.
  • A moisturizer, which does nothing for the bumps but keeps the surrounding skin comfortable.
  • Covering it, if it bothers you cosmetically. Camouflage makeup works well on the hands, which is where most people want it.
  • Accepting that treatment evidence is weak. Most options work for some people and not for others, and no one can predict which. If a treatment has done nothing after three months, stopping is sensible.
  • Getting the diagnosis confirmed. A great deal of the frustration with this condition comes from months of treating it as something it is not.
+1 more
  • Having blood sugar and cholesterol checked, if the widespread form appears in adulthood. That is worth knowing regardless of the skin.

Try at Home

−

There is no over-the-counter treatment for granuloma annulare, and that is worth saying plainly. What follows is for comfort and appearance while it runs its course.

Watching and waiting
Always
This is a real option and often the best one. Around half of cases clear within two years on their own, and no treatment has been shown to beat that reliably. Choosing to leave a harmless condition alone is a medical decision, not giving up.
Moderate evidence
If the only problem is how it looks, covering it is a reasonable answer. Purpose-made cover products stay put on the backs of the hands, which is where most people want them. It does nothing to the condition, and for a harmless condition that may be the right trade.

When to See a Dermatologist

−

A few rings on the hands do not need a dermatologist. It is worth going if:

  • You are not sure what it is, or you have been treating it as ringworm and nothing has changed.
  • It is widespread rather than a few patches. That form is more stubborn and worth checking bloods for.
  • It is on your face, or somewhere it bothers you enough to want it treated.
  • It has been there for years and is not shifting.
  • Anything about it is itchy, painful, scaly or ulcerated — that suggests it is not granuloma annulare.

What the visit gets you: a firm diagnosis, which is the main reason to go. A biopsy if there is any doubt, which settles it. Blood sugar and cholesterol checks if the pattern is widespread. And a realistic conversation about whether treating it is worth it at all — for many people the honest answer is that leaving it alone is as good as anything on offer.

What Happens at the Dermatologist?+

There is no blood test for granuloma annulare, and an experienced dermatologist can often recognise it on sight from the ring of firm bumps with no scale.

A skin biopsy is the real test. A small piece of skin is numbed and removed, usually with a punch about the size of a pencil tip, and examined under the microscope. Granuloma annulare has a distinctive appearance there, so a biopsy confirms it definitively. It is worth doing when the diagnosis is uncertain, when it has been treated as ringworm without success, or before starting any treatment with real side effects. One or two stitches, and a small permanent mark from the biopsy itself.

A KOH scraping is quicker and is sometimes done first, to rule fungus out in minutes rather than days. A negative result plus a ring with no scale makes granuloma annulare far more likely.

Blood tests are worth doing for the widespread form in adults: blood sugar or HbA1c and a cholesterol panel, because generalised granuloma annulare is associated with diabetes and lipid abnormalities. They are not needed for a few rings on the hands.

Prescription Treatments

−

Every option here comes with the same caveat: the evidence is weak, mostly from small studies and case reports rather than trials, and response is unpredictable. Give anything three months, and stop if nothing has changed.

Topical prescriptions
Limited evidence
The usual first thing tried, often a strong steroid used under a dressing to help it penetrate. It flattens some patches and does nothing for others, and there are no good trials behind it. Do not use it for months on the backs of the hands — the skin thinning outlasts the condition.
Topical prescriptions
Limited evidence
A non-steroid immune-calming ointment, useful where a steroid would be a bad idea — the face, or skin already thinned by months of steroid use. Reports of it working are mixed and come from small numbers of patients. It stings for the first week.
Pills and injections
Limited evidence
A tablet used for widespread granuloma annulare that has not responded to creams. It is slow — three to six months before you can judge it — and the evidence is small studies rather than trials. It requires a yearly eye check because of a rare effect on the retina.
Pills and injections
Limited evidence
Sometimes tried for its anti-inflammatory effect rather than as an antibiotic. It is cheap and familiar, which is most of why it gets used. The evidence in granuloma annulare is very thin, so treat it as a low-cost experiment rather than a plan.
Pills and injections
Limited evidence
Occasionally used for widespread granuloma annulare that has resisted everything else. It is a serious medication with monthly monitoring and strict pregnancy precautions, and the evidence here is a handful of case reports. Worth weighing carefully against a condition that causes no harm.
Pills and injections
Limited evidence
A weekly tablet that damps down the immune system, reserved for widespread, long-standing granuloma annulare that is genuinely bothering someone. It needs regular blood tests. For a condition that causes no physical harm, this is a decision to make slowly.

In-Office Treatments

−

Reserved for stubborn patches or widespread disease. Injections are the most reliable option for a single patch that will not shift.

Moderate evidence
A small amount of steroid injected into the raised border of a patch. This is the most reliable option for one stubborn ring, and it often works within a few weeks. It only treats what is injected, it stings, and repeat injections in one spot can leave a small dent or a pale mark.
Limited evidence
The main option for the widespread form, where treating individual patches is not practical. Two or three sessions a week for a few months. Results are mixed, and it is a significant time commitment for a condition that may clear on its own. Reasonable if it is extensive and bothering you.
Limited evidence
Liquid nitrogen applied to a single small patch. It works for some people and the trigger seems to be the inflammation caused by the freezing itself. It is uncomfortable, and on brown and Black skin it commonly leaves a pale mark that is more noticeable than the original patch.

What to Expect

−
Step 1
The first few months

Rings widen slowly and new ones may appear. This is normal behaviour for the condition, not a sign it is out of control.

Step 2
If you treat it

Give any treatment about three months before deciding. Steroid injections often work fastest on a single stubborn patch. If nothing has happened by three months, that treatment is unlikely to start working, and stopping is reasonable.

Step 3
If you do not treat it

Around half of people are clear within two years, and most clear eventually. The localised form on the hands and feet has the best odds. The widespread form is slower and can last many years.

Step 4
After it clears

No scarring. What can be left behind is a darker or lighter mark where the ring was, most noticeably on brown and Black skin, and that fades over months.

Step 5
The honest long view

It can come back, in the same place or elsewhere, and there is no way to predict who. Recurrence is not a treatment failure. Nothing about granuloma annulare threatens your health, and a treatment that is more trouble than the condition is not a good trade.

Complications

−

Granuloma annulare is harmless. It does not become anything else, it does not damage the skin, and it does not scar. The realistic downsides are these:

Pigment marks after it settles
Darker or lighter skin where the rings were, lasting months, and more visible on brown and Black skin. Temporary, and not scarring.
A long wait
The widespread form in particular can last for many years, which is wearing when it is visible.
Side effects from over-treating it
This is the most common actual harm. Long courses of strong steroid creams on the backs of the hands thin the skin and cause bruising and stretch marks. Repeated steroid injections leave small dents. For a harmless condition, that trade is often not worth it.
Missed diagnoses either way
Months of antifungal treatment is the usual outcome of the ringworm mix-up. Less commonly, a genuinely different condition gets labelled granuloma annulare, which is what a biopsy is for.
Associated conditions in the widespread form
Generalised granuloma annulare in adults is linked to diabetes and abnormal cholesterol, and rarely is a marker of something else. This is a reason to have bloods checked, not a reason to worry about a few rings on your hand.

Lookalikes

−

One lookalike matters far more than the rest. If you remember one thing from this page: granuloma annulare has no scale.

  • Ringworm (tinea corporis) — the misdiagnosis nearly everyone gets. Ringworm is scaly and itchy, with flaking at the advancing edge and a clearer centre, and it spreads outward over weeks. Granuloma annulare is smooth to the touch, does not flake, and rarely itches. If an antifungal cream has done nothing in three weeks, this is why. A skin scraping settles it in minutes.
  • Nummular eczema — coin-shaped, but filled in rather than a ring, intensely itchy, dry, scaly and often crusted. Granuloma annulare is a raised border around normal skin.
  • Necrobiosis lipoidica — appears on the shins as shiny, yellow-brown, flattened patches with visible small blood vessels, and it can ulcerate. Strongly linked to diabetes. Granuloma annulare does not thin the skin or break down.
  • Lichen planus — flat-topped purple bumps that are very itchy, often on the wrists and ankles, sometimes with white lacy lines on top or in the mouth.
  • Sarcoidosis of the skin — can form rings that look very similar, most often on the face and around scars. This is one of the reasons a biopsy is useful.
  • Erythema annulare centrifugum — expanding rings with a trailing edge of fine scale just inside the border, which granuloma annulare does not have.
  • Insect bite reactions — firm bumps in a group that itch and appear suddenly, then settle over weeks.
FAQ+
Is granuloma annulare the same as ringworm?No, and this is the most important question on the page. Ringworm is a fungal infection with a scaly, flaky, itchy edge. Granuloma annulare is an immune reaction, it is smooth with no scale, and it does not itch. Antifungal creams do nothing for it.
Is it contagious?No. It is not caused by fungus, bacteria or a virus, and it cannot pass to anyone else.
Will it go away on its own?Usually. Around half of cases clear within two years and most clear eventually. The localised form on the hands and feet does best. The widespread form takes longer.
Does it need treating?Not medically. It causes no harm. Treatment is worth considering if it bothers you cosmetically or is widespread, and it is entirely reasonable to decide to leave it alone.
Why do treatments work for some people and not others?Because the evidence behind nearly all of them is weak. Most options come from small studies or case reports rather than proper trials, so response is unpredictable. Anyone who tells you a particular treatment reliably works for granuloma annulare is overstating it.
Does it mean I have diabetes?Not for the common localised form. The widespread form in adults is associated with diabetes and with abnormal cholesterol, which is why blood tests are usually done in that situation. Most people with granuloma annulare do not have diabetes.
Does it scar?No. It can leave darker or lighter marks for months after it settles, particularly on brown and Black skin, but those are pigment changes and they fade.
Can it come back?Yes, in the same spot or elsewhere. Recurrence is common and does not mean anything went wrong.
What caused it?Usually nothing identifiable. Bites, minor injuries, infections and some medications have been reported as triggers, but most people never find a cause and there is nothing you did.
Do I need a biopsy?Only if the diagnosis is not clear, or before starting a treatment with real side effects. A biopsy is the test that settles it definitively.
Is it itchy?Usually not, or only mildly. Significant itch is a reason to question the diagnosis.
What if it is on my face?The same condition, but people understandably want it treated. Strong steroids are avoided on facial skin, so a non-steroid cream or a light-based treatment is usually preferred.