Cystic Acne — What Causes It · How Long to Heal · Preventing Scars
Cystic acne is the type most likely to scar. Dr. Big explains the causes, how long it heals, correct treatment, and how to prevent scarring. Ratchathewi, near BTS.
A patient once asked Dr. Big: “I’ve had a cyst on my jaw for 3 weeks, it won’t subside, spot creams don’t work — what do I do?”
He answered honestly — don’t wait, go to a clinic — because cystic acne doesn’t clear easily like small pimples, and every inflamed day damages the skin beneath → a near-100% chance of scarring.
This article explains: what cystic acne is, what causes it, how long it heals, how to treat it, and how to prevent permanent scars.
What is cystic acne — vs ordinary acne
Cystic acne (a “cyst”) is a large, deep, pus-filled lump, over 15mm, that hurts and lasts 4–8 weeks. Unlike surface pimples, it sits deep in the dermis — which is why creams can’t reach it and why it scars so readily.
| Feature | Ordinary pimple | Cystic acne |
|---|---|---|
| Size | Small | Large (>15mm) |
| Depth | Shallow | Deep (dermis) |
| Pain | Mild | Severe |
| Duration | 3–5 days | 4–8 weeks |
| Scar risk | Low | ~100% |
What causes cystic acne
- Hormones — androgen surges (period, stress) drive deep oil production
- Deep clogging — oil + dead cells trapped deep in the follicle
- Bacteria — C. acnes multiplies, triggering deep inflammation
- Follicle rupture — the wall breaks, spreading inflammation through the dermis
Triggers: dairy + sugar · stress + poor sleep · squeezing · oily skin + chronic clogging.
How long does cystic acne take to heal?
- Left alone (not squeezed): 4–8 weeks
- Squeezed/poked: can drag on 2–3 months and scar
Cystic acne won’t pop — there’s nothing to release, just deep inflammation · squeezing only destroys surrounding tissue.
How to treat cystic acne
Don’t do this
Don’t squeeze · don’t poke with a needle · don’t use toothpaste · don’t apply harsh products.
Do this
- Spot anti-inflammatory (Benzoyl Peroxide, Niacinamide, Centella)
- Cold compress 10 min × 2–3/day
- See a doctor if large and very painful
Best in-clinic option: intralesional steroid injection
A doctor injects anti-inflammatory medication directly into the cyst → it subsides in 24–48 hours · safer than squeezing · no scar.
The doctor may also give oral antibiotics or isotretinoin for severe chronic cases.
Preventing scars from cystic acne
- Treat early — inject to subside before it grows · 2. Never squeeze · 3. SPF50+ daily · 4. Reduce dairy + sugar · 5. Sleep + reduce stress · 6. If recurring → see a doctor.
Read more: How to treat inflammatory acne and Blind pimples treatment.
If it already scarred
Cystic acne is the top scar producer. Once scarred, treat with Subcision + MNRF + Laser — read Acne Scars: The Complete Guide.
Frequently asked questions
Q: How long does cystic acne last? A: 4–8 weeks if untreated · longer if squeezed · fastest with an injection (24–48 hours).
Q: Can I pop a cyst? A: No — there’s nothing to release · popping spreads inflammation and scars.
Q: Why do I get cysts before my period? A: Pre-period progesterone and androgen drive deep oil → deep inflammation.
Q: Does the injection leave a dent? A: With the right technique and dose (Triamcinolone 2.5 mg/ml), the risk is very low · too concentrated may cause temporary skin atrophy (usually resolves in 2–3 months).
Q: Where can I consult or get a cyst injected near BTS? A: At Clarity Clinic Ratchathewi, near BTS Ratchathewi (1-min walk), easy to reach from Siam, Phaya Thai, all of Bangkok — Dr. Big assesses and treats in person, free 30-min consult.
Summary
Cystic acne is treatable if you don’t squeeze and care for it correctly — most Clarity patients see a 60–80% improvement in 4–8 weeks. The key is “stop touching” and “treat before it grows.”
Contact:
- LINE: @clarityclinic — send a photo of your acne scars for Dr. Big to review
- Location: Spring Tower, B Floor · Ratchathewi, near BTS (Siam, Phaya Thai, all Bangkok)
- Free 30-minute consult with Dr. Big in person
- Price 5,000 baht/session including all main procedures + aftercare cream · pay per session, no course packages
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