Conditions · Face · Severe Acne

Cystic Acne and Acne Nodules

Medically reviewed by Dr Sin Yong · Last reviewed · 16 min read · Assessed personally by Dr Sin Yong · Jump to questions

Main guide  Acne treatment Singapore — what it treats, who it suits, sessions, downtime and what decides the cost, by Dr Sin Yong.

Cystic acne is the deep form of acne: inflamed nodules and cysts seated in the lower dermis that hurt, last for weeks, do not come to a head and can scar. Skincare cannot reach that depth, so cystic acne is graded by a doctor and usually treated with prescription medicine, with scar treatment once the acne is controlled.

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Cystic acne treatment is medical: deep, painful nodules sit below the reach of skincare, so a doctor grades severity and considers oral treatment, such as antibiotics, hormonal therapy in women or isotretinoin, each requiring assessment and prescription. The 2024 American Academy of Dermatology guideline, built on a systematic review, strongly recommends oral isotretinoin for acne that is severe, scarring or not responding to standard treatment. In-clinic procedures can settle individual cysts; scar treatment follows once the acne is controlled.

In brief
  • Cystic acne means deep, painful nodules and cysts in the dermis, below the reach of skincare.
  • Deep inflammation can damage collagen, which is how pitted, rolling and boxcar scars start.
  • A doctor grades severity and considers oral treatment such as antibiotics, hormonal therapy in women or isotretinoin, each needing prescription.
Key takeaways
  • Cystic acne means deep, painful nodules and cysts in the dermis, below the reach of skincare.
  • Deep inflammation can damage collagen, which is how pitted, rolling and boxcar scars start.
  • A doctor grades severity and considers oral treatment such as antibiotics, hormonal therapy in women or isotretinoin.
  • Squeezing, spot hacks and serial facials do not address deep lesions; scar treatment follows once acne is controlled.
  • Dr Sin Yong, an aesthetic physician, refers to dermatology where acne is severe, unusual or not responding.
On this page
  1. Key Facts
  2. What does cystic acne look like?
  3. What makes an acne lesion cystic?
  4. Why routines fail and time is the enemy
  5. Cystic acne treatment in Singapore: what actually works?
  6. What doesn't work for cystic acne?
  7. Dr Sin Yong’s Viewpoint
  8. Which type do you have?
  9. What does not work, and why
  10. When to see a doctor
  11. Myths we hear in clinic
  12. Questions Patients Actually Ask
  13. Can a painful cyst be injected to make it go down?
  14. Is cystic acne hormonal?
  15. Cortisone injection for acne in Singapore: what happens, and when it is not used

LookalikesOften confused with a slow pimple or a hormonal breakout: a nodule or cyst is a deep, firm, tender lump with no visible head that lasts for weeks and does not come to the surface, so squeezing pushes inflammation deeper. hormonal jawline acne.

Key Facts

Depth
Nodules and cysts form in the deep dermis — below where any topical product meaningfully penetrates
Behaviour
Painful, persistent lumps lasting weeks to months; healing one while a neighbour forms
The lasting cost
Deep inflammation destroys collagen scaffolding — the origin of pitted, rolling and boxcar scars
Guideline anchor
Severe nodulocystic acne is a medical condition with specialist-level treatment pathways
Key medication class
Oral isotretinoin — the guideline-supported option for severe scarring acne, physician-supervised
The rule of thumb
Acne that hurts is acne that scars — and acne that scars is acne to treat now
Who assesses this
A physician — severe acne is medical, not cosmetic
Typical first step
Severity grading and a systemic-treatment conversation; scars cost more than treatment

What does cystic acne look like?

Inflammatory nodular acne of the cheek
Inflammatory nodular acne of the cheek. Image: Sedef94, via Wikimedia Commons (CC BY-SA 4.0).
Inflamed nodules over the cheek
Inflamed nodules over the cheek. Image: Sedef94, via Wikimedia Commons (CC BY-SA 4.0).
Nodules and cysts along the chin and jawline
Nodules and cysts along the chin and jawline. Image: Sedef94, via Wikimedia Commons (CC BY-SA 4.0).
Acne lesions by depth: comedone, papule, pustule, nodule or cyst Four lesions side by side in a skin cross-section. A comedone is a blocked follicle with a plug and no inflammation. A papule is the same follicle with inflammation around it, raising a red bump. A pustule has a collection of pus just under the surface, surrounded by inflammation. A nodule or cyst forms when the follicle wall ruptures deep in the dermis and the inflammation is walled off far below the surface, with no head. From left to right the inflammation sits deeper, and the deep lesions are the ones most linked to scarring. ACNE LESIONS BY DEPTH From blocked pore to nodule Comedone Papule Pustule Nodule, cyst Epidermis Dermis Fat Blocked pore,not inflamed Inflamed,red bump Pus nearthe surface Deep, walledoff, no head inflammation sits deeper Inflammation Plug or pus Deep lesions are the ones most linked to scarring.
Illustrative diagram, not to scale.
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What makes an acne lesion cystic?

Ordinary pimples are shallow: inflammation near the surface, resolving in days. In nodulocystic acne the follicular wall ruptures deep, spilling its contents into the dermis, and the immune response walls off an inflamed nodule far below the surface. That depth explains everything patients notice — the pain (pressure on deep nerve endings), the duration (deep inflammation resolves slowly), the fact that squeezing produces nothing but more damage, and the scarring, because the battle is fought inside the skin's structural layer itself [1].

Blind pimples and cystic pimples: what they are and what to do with one

A blind pimple is the everyday name for a tender bump under the skin with no white head. It is an inflamed follicle sitting too deep to come to the surface. A cystic pimple is the larger, deeper and more painful version. One blind pimple now and then is ordinary acne. Several deep, painful lumps that keep returning, often along the jaw, chin or cheeks, are nodulocystic acne and need a doctor.

Why it has no head

The inflammation sits low in the follicle, and the opening at the surface stays closed. There is nothing to drain, which is why squeezing only pushes the inflammation sideways and makes the lump bigger.

What a doctor checks it is not

  • Epidermoid cyst: a smooth, mobile lump, often with a tiny central pore, that grows slowly and is not tender unless it inflames.
  • Boil: a hot, fast-enlarging, very painful lump that fills with pus, sometimes with fever. It is an infection, not acne.
  • Ingrown hair: a bump in the beard or bikini area, sometimes with a visible coiled hair.
  • Recurrent lumps in the armpits or groin: these suggest hidradenitis suppurativa, which is managed differently.

Blind pimple treatment: what you can and cannot do at home

Leave it alone. A clean, warm compress can make it more comfortable, and simple pain relief helps. Keep using your usual acne treatment on the surrounding skin. Pimple patches suit spots that have already opened; they cannot reach a deep lesion. Do not squeeze, needle, or apply toothpaste or steroid creams bought without advice.

Why it matters more in Asian skin

In an Asian Acne Board survey across seven Asian countries, more than half of people seeing a dermatologist for acne had post-inflammatory hyperpigmentation, and the marks often lasted longer than the spots. Deep lesions and picking are the usual source, so a blind pimple left alone is less likely to leave a dark mark than one that has been squeezed.

When a blind pimple needs a doctor

See a doctor if lumps keep forming in the same places, if they leave dents or dark marks, or if one is very painful before an important event, when a cortisone injection may be considered. Spreading redness, fever or a lump that keeps growing need prompt review. The medical plan for recurring deep acne is on acne treatment in Singapore.

Why routines fail and time is the enemy

Topicals matter in mild and moderate acne, but a cream cannot reach a lesion seated millimetres down — which is why cystic acne shrugs off skincare that works for everyone else. Meanwhile the clock runs: each deep lesion that flares and subsides can take collagen with it, and scar revision is always harder than scar prevention. Current guidelines are unambiguous that severe acne warrants escalation to systemic therapy rather than prolonged topical experimentation [1]. In adult women, a cyclical jawline pattern overlaps with hormonal acne, and the hormonal arm changes the plan.

Cystic acne treatment in Singapore: what actually works?

Medical treatment, matched to severity. Guidelines support oral therapy for nodulocystic disease — antibiotic courses in defined roles, hormonal therapy in women where indicated, and oral isotretinoin as the established option for severe or scarring acne, prescribed and monitored by a physician [1,2]. In-clinic procedures support the medical arm: intralesional treatment can settle an acute cyst, and laser-based protocols used in acne treatment in Singapore target inflammation and oil output. Once disease is controlled, the Tetra Pro scar programme and 4D scar reconstruction address what past cysts left behind — but control comes first; scar treatment during active cystic acne is building on a battlefield.

A woman in her twenties with bare skin in soft clean light (illustrative image, not a patient)
Illustrative image — not a patient.

What doesn't work for cystic acne?

Squeezing — a deep cyst has no exit; pressure ruptures it sideways into more dermis and doubles the scar. Drying toothpaste-style spot hacks on a lesion seated beyond their reach. Serial facials for a medical-grade condition. And the costliest mistake: waiting a year to see a doctor, then spending far longer treating scars that earlier treatment might have prevented.

“You cannot pop a cyst that has no exit — pressure just moves the rupture sideways, and the scar is the receipt.”

— Dr Sin Yong

Dr Sin Yong’s Viewpoint

Cystic acne is the one form of acne where I get openly urgent with patients. Every month of deep, active inflammation is billed later in scar tissue, and scar revision costs multiples of acne control — in money, sessions and time. Acne that hurts is acne that scars. Treat it now.

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Which type do you have?

Cystic acne and its look-alikes, and how each is approached
Type / look-alikeHow to recognise itWhat it needsWhat does not work
Acne nodule (deep, firm lump)Firm, tender lump deep in the skin, no visible headMedical grading, and treatment matched to severitySqueezing, which pushes inflammation deeper
Acne cyst (deep, fluid-filled)Larger, fluid-filled, painful lump that may refill in one spotPhysician assessment, and in-clinic care for individual lesionsDrying spot hacks that cannot reach the lesion
Hormonal jawline acne (cyclical lumps)Cyclical deep lumps on the jaw and chin in adult womenAssessment of hormonal factors and medical therapySkincare alone, which cannot reach deep lesions
Papulopustular acne (superficial pimples)Smaller red bumps and pustules near the surfaceTopical and routine-based treatment, as gradedAssuming it is as serious as nodulocystic acne
Epidermoid cyst or boilSingle lump with a central pore, or tender abscessDiagnosis before any treatmentTreating it like acne without examination

What does not work, and why

A woman in her twenties with bare skin in soft clean light (illustrative image, not a patient)
Illustrative image — not a patient.

When to see a doctor

Related
For the complete sequence by scar type, read the acne scar removal Singapore guide, where Dr Sin Yong explains why depth decides between FSX Laser and the S3 Resurfacing Lift.

Related
See the back acne treatment Singapore guide for the acne-versus-folliculitis check that comes before any treatment.

Your next step
  1. 1. MessageWhatsApp +65 8023 7170 with what is bothering you. A reply comes from the clinic, not a bot.
  2. 2. AssessmentDr Sin Yong examines you himself on Orchard Road, with ultrasound where earlier filler is involved.
  3. 3. A plan in writingWhat he would do, what he would not, the fee factors, and the option of no treatment.

Every treatment is performed by Dr Sin Yong personally. Singapore Medical Council registered · invited to share his clinical expertise internationally as a Key Opinion Leader for CLASSYS, DEKA, HIRONIC, FOTONA, ALMA, LUTRONIC and ILOODA · HSA-registered devices · ultrasound-guided correction

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Myths we hear in clinic

“Cystic acne can be popped like an ordinary pimple.”

A deep cyst has no exit, so squeezing pushes inflammation sideways and can worsen scarring.

“Diet alone can clear cystic acne.”

Diet can modify acne in some people, but severe nodulocystic acne needs medical treatment.

Watch

In his words

“Getting the acne controlled first isn't a delay. It's the sequence.”Dr Sin Yong

Why I Turn Away Scar Patients Every Week

Watch on YouTube: Acne Treatment Singapore: Treat the Acne Before the Scars

Read the transcript

Treat the acne before the scars. I turn people away from scar treatment every week, and it's almost always for the same reason. If your acne is still active, you are resurfacing a moving target. New scars form while old ones are being treated. Getting the acne controlled first isn't a delay. It's the sequence. It's the less profitable answer, but it's the right order.

Transcript of Dr Sin Yong's video, lightly edited for reading.

Related on this site

Questions Patients Actually Ask

Can I get cystic acne treated at the National Skin Centre in Singapore?+
Cystic acne is a medical condition, so it can be seen at the National Skin Centre. Subsidised appointments there are for eligible Singapore citizens and permanent residents referred by a polyclinic, a CHAS clinic for CHAS cardholders, or a subsidised public hospital clinic; the referring clinic makes the first appointment, and there is usually a waiting time. A private doctor can see you without that referral.
What is cystic acne?+
Cystic acne is a severe form of acne in which inflamed nodules and cysts form deep in the dermis rather than near the surface. The lumps are tender, last for weeks, rarely come to a head and can damage collagen, which is how pitted and rolling scars begin. Because skincare cannot reach that depth, cystic acne is assessed and treated by a doctor.
Is a cyst pimple the same as a blind pimple?+
A cyst pimple and a blind pimple are related but not identical. A blind pimple is any tender bump under the skin with no white head; a cyst pimple is a larger, deeper, often fluid-filled lesion that may refill in the same spot. Neither should be squeezed, and lumps that keep returning or leave marks are worth a doctor’s assessment.
Should I pop an acne cyst?+
An acne cyst should not be popped or needled at home. The inflammation sits deep in the dermis with no opening to the surface, so squeezing pushes it sideways, enlarges the lump and raises the risk of a dent or a dark mark. A clean, warm compress can ease discomfort, and a painful cyst before an important event can be assessed by a doctor for a cortisone injection.
What is a blind pimple?+
A blind pimple is a tender, red bump under the skin with no white head. The inflammation sits deep in the follicle and the opening at the surface stays closed, so there is nothing to squeeze out. Occasional blind pimples are part of ordinary acne. Deep, painful lumps that keep returning in the same areas are nodulocystic acne and are worth a doctor’s review.
How do you get rid of a blind pimple?+
Leave it alone, keep the skin clean and use a warm compress for comfort while it settles. Squeezing or needling pushes the inflammation deeper and raises the chance of a dark mark or a dent. If blind pimples keep coming back, treatment is aimed at the acne behind them, and a doctor can inject a single very painful lesion when that is appropriate.
What is a cystic pimple?+
A cystic pimple is a large, deep, painful acne lesion that forms when a follicle ruptures below the surface and the body walls off the inflammation. It is felt more than seen, has no head and can linger. Cystic pimples are a sign of nodulocystic acne, which needs medical treatment because deep inflammation is what leaves acne scars.
Acne nodule vs cyst: what is the difference?+
Both are deep lesions that form when the follicle wall ruptures below the surface and the immune response walls off inflammation in the dermis. An acne nodule is a firm, tender lump with no visible head. An acne cyst is larger, fluid-filled and painful, and may refill in the same spot. Neither responds to squeezing or drying spot products, which cannot reach the lesion. A single lump with a central pore may instead be an epidermoid cyst.
How do I know if my acne is cystic?+

Depth, pain and duration: lumps you feel more than see, tender to pressure, lasting weeks without coming to a head. That triad is deep inflammatory acne and merits medical review.

Will cystic acne go away on its own?+

Individual cysts eventually subside; the condition keeps producing new ones, and each cycle risks lasting scarring. Spontaneous resolution is measured in years — scars arrive faster.

Is isotretinoin dangerous?+

It is a serious medication with well-defined monitoring requirements and absolute rules around pregnancy — which is exactly why it is prescribed and supervised by a physician, not sourced casually. Under proper supervision it remains the guideline-backed option for severe acne.

Can I treat the scars while I still have acne?+

Active inflammation undermines scar work. Control the disease first, then reconstruct — the sequencing protects your investment in both.

Why does my cyst refill in the same spot?+

A ruptured follicle can heal into a walled cavity that reinflames repeatedly. Recurrent same-spot cysts often need definitive in-clinic treatment of that structure, not another cream.

Does diet cause cystic acne?+

Evidence links high-glycaemic diets and some dairy to acne severity in some people, but diet is a modifier. Severe nodulocystic acne is not cured by any menu — it needs medical treatment.

Should I see a dermatologist for cystic acne?+
Cystic acne should be seen by a doctor rather than managed with skincare alone. A physician can grade the severity, start appropriate medical treatment and plan scar care once the acne is controlled. Where the acne is very severe, unusual, not responding to treatment, or linked to a suspected hormonal or other medical condition, referral to a dermatologist is appropriate. What matters most is not waiting, because each month of deep inflammation risks further scarring.
How long does cystic acne treatment take to work?+
Longer than most people hope, and it varies. Oral treatments work over weeks to months rather than days, and new lesions can still appear early in a course. Progress is judged at review by how many new nodules are forming and how quickly existing ones settle, and the plan is adjusted if it is not working. Individual painful cysts can be managed in the meantime, and scar treatment is planned once the acne is under control.
How quickly does a cortisone injection work on a cyst?+
The inflammation in an injected cyst usually starts to settle within a few days, as pain and swelling ease, though the lump can take longer to flatten fully and a mark may remain. Response varies with the size and depth of the lesion. It calms one acute lesion and has no effect on others.
Can a cortisone shot leave a dent in the skin?+
It can. If too much steroid is used, or it is placed too shallow, the fat beneath the site can thin and leave a small depression, or the skin can lighten. Both are more likely with stronger concentrations and repeated injections in the same spot. They often improve over several months, but not always, which is why dilute doses, careful depth and restraint with repeat injections matter.
Is a cortisone shot the same as draining a cyst?+
No. A cortisone injection places a dilute steroid into the lesion to calm the inflammation without opening it. Drainage opens a lesion to release its contents and is considered only in selected cases, such as a soft, fluctuant lesion, because cutting into deep acne can itself scar. Squeezing or needling a cyst at home is neither, and pushes inflammation deeper.
What causes cystic acne?+
In nodulocystic acne the follicle wall ruptures deep in the dermis and spills its contents, and the immune response walls off a painful, inflamed lump. Oil production, bacteria, follicle blockage, genetics and, in some women, hormonal patterns all contribute. Diet can modify acne in some people but is not the sole cause.
Can cystic acne be fully cured?+
Cystic acne can be controlled with medical treatment, and many people see it settle over time, but no outcome can be promised. Individual lesions eventually subside while new ones may form. Early assessment matters because deep inflammation can leave scars that need separate treatment once the acne is controlled.
What is the right treatment for cystic acne?+
It depends on severity, pattern and the person. Options a doctor may consider include oral antibiotics, hormonal therapy in women where indicated, and oral isotretinoin, each needing assessment and prescription. In-clinic care can support individual lesions, and referral to dermatology is appropriate where acne is severe or not responding.
How much does cystic acne treatment cost in Singapore?+
The fee depends on severity, whether prescription medicines are needed, review visits, any in-clinic procedures for individual cysts, and whether scar treatment is planned later. Dr Sin Yong gives a written quote at consultation after grading the acne, and the consultation also decides whether treatment here or dermatology referral is more appropriate.

References

  1. Guidelines of Care for the Management of Acne Vulgaris — Journal of the American Academy of Dermatology (2024).
  2. Adult Female Acne: A Guide to Clinical Practice — Anais Brasileiros de Dermatologia (PMC).
  3. Abad-Casintahan F, Chow SK, Goh CL, et al. Frequency and characteristics of acne-related post-inflammatory hyperpigmentation. Journal of Dermatology, 2016. pubmed.ncbi.nlm.nih.gov
  4. Abad-Casintahan F, Chow SKW, Goh CL, et al. Toward evidence-based practice in acne: consensus of an Asian Working Group. Journal of Dermatology, 2011. pubmed.ncbi.nlm.nih.gov

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Can a painful cyst be injected to make it go down?

In selected cases, yes. A doctor can inject a single inflamed cyst with a small, diluted dose of corticosteroid, which calms the inflammation within that lesion. It is used for an acute, painful nodule, for example one that is large and tender or arrives before an important event, rather than as a treatment for acne itself, because it does nothing to stop new cysts forming.

The dose and the depth matter. Too much steroid, or steroid placed too shallow, can thin the skin and leave a dent or a pale patch at the site; these often improve with time, but not always. That is why it is a doctor's procedure, done after examination, and not something to repeat again and again on the same spot. A cyst that keeps refilling in one place may have become a walled cavity that needs a different approach.

Squeezing or needling a cyst at home is another matter entirely: it pushes the inflammation deeper and makes scarring more likely.

Is cystic acne hormonal?

Sometimes. Androgens drive oil-gland activity in everyone, so hormones play a part in all acne, but in some adult women cystic acne follows a recognisable pattern: deep, tender lumps along the jaw and chin that flare before a period. That pattern raises the question of a hormonal contribution, and occasionally of an underlying condition such as polycystic ovary syndrome, which a doctor may look into with a history, an examination and sometimes blood tests.

Where a hormonal pattern is confirmed, treatment that reduces the effect of androgens on the skin can be part of the plan, for example certain combined oral contraceptives or anti-androgen medicines such as spironolactone. These are prescription medicines with their own side effects and they are not suitable for everyone, so the choice follows a medical assessment. Hormonal therapy is not used in men, and in severe or scarring disease it is often combined with other oral treatment rather than used instead of it.

Cystic acne treatment options, compared
OptionWhat it doesWhat it cannot doTypical recoveryWho it tends to suit
Oral isotretinoin (prescription)Shrinks oil glands, reduces oil output and acts on the main drivers of acne; guideline-supported for severe or scarring nodular acneTreat existing scars; it is not used in pregnancy and needs regular monitoringDry lips and skin are common; blood tests and reviews during the courseSevere, scarring or treatment-resistant nodulocystic acne, after a doctor's assessment
Oral antibiotics (prescription)Reduce inflammation and bacteria for a defined period, usually alongside a topical treatmentBe used long term or on their own, because of resistance; they do not reduce oil production as isotretinoin doesPossible stomach upset or sun sensitivity, depending on the medicineInflammatory acne needing a time-limited course, or a bridge while other treatment starts
Hormonal therapy for women (prescription)Reduces the effect of androgens on oil glands, for example with certain combined oral contraceptives or anti-androgen medicinesSuit everyone; it is not used in men, and medical history decides suitabilitySide effects vary with the medicine and are discussed beforehandWomen with a cyclical, jawline-predominant pattern of deep lesions
Intralesional corticosteroid injectionA small, diluted dose placed into one inflamed cyst to calm the inflammation in that lesionStop new cysts forming; too strong a dose can leave a dent or pale markLittle to see; occasionally temporary thinning or lightening at the siteAn acute, painful individual cyst, alongside treatment of the underlying acne
Laser-based acne protocolsDirected at inflammation and oil output as support for medical treatmentReplace oral treatment in severe nodulocystic acneRedness that settles; varies with the protocolPeople already on a medical plan who want in-clinic support
Scar treatment (Tetra Pro scar programme, 4D scar reconstruction)Addresses the scars that past cysts left behindControl active acne; working on active disease undermines the resultVaries with the method; discussed before treatmentEstablished scarring once the acne has been controlled

Medically reviewed by Dr Sin Yong, MBBS (NUS), MRCS (Edinburgh) · Last updated 5 November 2026 · Editorial policy

Cortisone injection for acne in Singapore: what happens, and when it is not used

A cortisone shot for acne is a doctor's procedure: after examination, a very dilute corticosteroid, most often triamcinolone, is injected through a fine needle into the centre of one inflamed nodule or cyst. The aim is to calm the inflammation inside that lesion, which usually begins to settle over the following days. It treats that lesion only, and does nothing for the spots around it or for the acne that produced it.

It is not used for every spot. Small surface pimples and comedones do not need it; a soft, fluctuant lesion full of pus may need different care; and a cyst that has been injected before in the same place is approached cautiously, because repeated steroid at one site raises the risk of a dent from fat atrophy or a pale patch, which shows more in darker skin. Dents and pale patches often improve over months, but not always. Pregnancy, suspected infection and lesions close to the eye are discussed individually. If cysts keep appearing, injections are treating them one at a time; the underlying nodulocystic acne needs medical treatment matched to its severity, which is what prevents new cysts and the scars they leave.

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