Perioral Dermatitis: Pictures, Causes & Treatment
Perioral dermatitis is a persistent facial rash of small red or skin-coloured bumps and fine scaling clustered around the mouth, and sometimes around the nose and eyes. It most often affects women aged 20–45, is frequently triggered or prolonged by topical steroids, and improves reliably once the right treatment is started.
Medically reviewed by Dr. Celina Kazumi Iwasa, MD · Last reviewed 2026-08-23
Quick answer
Perioral dermatitis is a facial rash of small inflamed bumps and scaling around the mouth, typically sparing a narrow border of skin next to the lips. It is commonly triggered by topical or inhaled steroids and heavy skincare. Treatment means stopping all steroid creams and simplifying skincare, plus topical metronidazole, azelaic acid or ivermectin, or oral doxycycline for stubborn cases. It usually clears in 4–8 weeks.
One free scan gives a first answer — the 3-month plan tracks how it changes over time.
What perioral dermatitis looks like
The classic pattern is crops of 1–2 mm papules and tiny pustules on a mildly red or dry base, grouped around the mouth with a clear untouched rim of skin immediately next to the lip line. It usually burns, stings or feels tight rather than itching intensely.
Common locations
- Around the mouth, with a spared rim at the lip border
- Nasolabial folds and the sides of the nose
- Around the eyes (periocular dermatitis)
- Chin and jawline
- Occasionally the forehead and glabella
Typical signs
- Small red or skin-coloured bumps in clusters
- Fine dry scaling over the bumps
- Burning, stinging or tightness rather than itch
- Rash flaring after steroid cream is stopped, then settling
- No blackheads or whiteheads (which distinguishes it from acne)
On brown and Black skin
On brown and Black skin the bumps may be skin-coloured, brown or violet rather than red, and are easier to feel than to see. Post-inflammatory darkening around the mouth is common after the rash resolves and may take several months to fade.
Causes and triggers
The exact mechanism is not fully established, but perioral dermatitis is strongly associated with topical steroid use and with disruption of the skin barrier and follicular microbiome around the mouth.
| Trigger | Why it matters |
|---|---|
| Topical corticosteroids | The single strongest trigger. Steroid creams settle the rash briefly, then it rebounds worse — driving repeat use and a longer course. |
| Inhaled or nasal steroids | Asthma inhalers and nasal sprays can produce the same rash around the mouth or nose; rinsing after use helps. |
| Heavy occlusive skincare | Rich moisturisers, foundations, petrolatum-based balms and layered actives can occlude follicles around the mouth. |
| Fluoridated toothpaste | Some cases improve after switching toothpaste, particularly when the rash hugs the lip line. |
| Hormonal fluctuation | Many people notice flares premenstrually or after starting or stopping hormonal contraception. |
| Face masks and friction | Prolonged occlusion and humidity around the mouth can precipitate or worsen the rash. |
Conditions that look similar
Perioral dermatitis is regularly misdiagnosed as acne or eczema and then treated with steroids, which makes it worse. The spared rim of skin at the lip border is the most useful sign.
| Condition | How to tell it apart |
|---|---|
| Acne | Includes blackheads and whiteheads, involves the whole face, and lesions vary in size; perioral dermatitis bumps are uniform and grouped. |
| Rosacea | Central-face flushing, visible vessels and papules on the cheeks and nose rather than a ring around the mouth. |
| Seborrhoeic dermatitis | Greasy yellowish scale in the nasolabial folds, eyebrows and hairline rather than discrete bumps. |
| Contact dermatitis | Itchy, more diffusely red and often scaly or weeping, matching an applied product rather than clustering around the mouth. |
| Impetigo | Golden crusted sores that spread and are contagious, rather than small dry bumps. |
Treatment options
Treatment has two halves: remove what is driving it, and use an anti-inflammatory that is not a steroid. Expect a temporary flare in the first two weeks after stopping steroid cream — this is the rebound phase and it settles.
Zero therapy
Stop all topical steroids on the face and strip skincare back to a gentle non-foaming cleanser and, if needed, a light non-comedogenic moisturiser. Many mild cases resolve on this alone over 4–8 weeks.
Topical prescriptions
Topical metronidazole, azelaic acid, ivermectin or erythromycin are first-line prescription options and are usually continued for 8–12 weeks.
Oral antibiotics
Widespread or stubborn cases respond well to a 6–12 week tapering course of oral doxycycline, lymecycline or erythromycin, prescribed for their anti-inflammatory effect.
Managing the rebound
If long-term potent steroid has been used, a clinician may step down to a weaker steroid or use a topical calcineurin inhibitor briefly while withdrawing, rather than stopping abruptly.
Preventing recurrence
Keep facial skincare minimal long-term, rinse the mouth and face after inhaler use, avoid steroid creams on the face entirely, and reintroduce products one at a time after clearance.
When to see a doctor
See a clinician if the rash persists beyond a few weeks, keeps returning, or has been treated with steroid creams — prescription treatment shortens the course considerably.
Red flags
- Rash spreading to around the eyes or affecting vision-adjacent skin
- Rash worsening each time a steroid cream is stopped
- No improvement after 8 weeks of simplified skincare
- Painful, weeping or crusted areas suggesting secondary infection
- Significant distress, or scarring and persistent dark marks developing
Frequently asked questions
What causes perioral dermatitis?
The most common trigger is topical steroid cream used on the face, including creams prescribed for other rashes. Inhaled and nasal steroids, heavy occlusive skincare and foundations, fluoridated toothpaste, hormonal changes and prolonged mask wear are other recognised triggers. The underlying process involves barrier disruption and follicular inflammation around the mouth.
How long does perioral dermatitis take to clear?
With treatment, most cases clear in 4–8 weeks, and stubborn cases treated with oral antibiotics may take 8–12 weeks. There is often a flare during the first one to two weeks after stopping steroid cream — that rebound is expected and settles.
Can I use hydrocortisone on perioral dermatitis?
No. Steroid creams, including over-the-counter hydrocortisone, give brief improvement and then make perioral dermatitis worse and more persistent. Stopping the steroid is the key first step, and a clinician can supervise a taper if a potent steroid has been used for a long time.
Is perioral dermatitis the same as acne?
No. Acne includes blackheads and whiteheads and affects the whole face with lesions of varying size. Perioral dermatitis produces uniform small bumps grouped around the mouth with a spared rim at the lip border, and it typically burns rather than itches. Some acne treatments do help, but the trigger management is different.
What skincare should I use with perioral dermatitis?
Use as little as possible while it settles: a gentle non-foaming cleanser, water, and a light non-comedogenic moisturiser only if the skin feels tight. Pause exfoliating acids, retinoids, heavy balms, thick foundation and any product containing steroid. Reintroduce products one at a time once the rash has cleared.
Does perioral dermatitis come back?
It can recur, particularly if facial steroids are used again or heavy occlusive skincare is resumed. Keeping a minimal routine, rinsing after inhaler use and treating flares early with the prescription that worked before keeps most people clear.
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Check your skin nowRelated guides
- Perioral dermatitis: full clinical A–Z entry
- Contact dermatitis
- Eczema (atopic dermatitis)
- Dermatitis types hub
- Skin symptom pictures library
This page is for general information and does not replace a medical consultation. If you are worried about a skin change, see a qualified clinician.