Perioral vs periorificial dermatitis: What's the difference?

What do the different names mean?

Clinical terminology uses several names for these locations, because apparently one long word was not enough paperwork.3

What does the rash look like?

The usual pattern is clusters of small inflamed bumps, sometimes with tiny pus filled spots or flaking. A narrow strip immediately next to the lip often stays clear. The rash can itch, burn or feel tender. Unlike acne, it does not produce comedones, meaning blackheads and whiteheads.24

Location alone cannot identify the rash. Periorificial dermatitis can resemble acne or rosacea, while contact dermatitis and seborrhoeic dermatitis also need consideration. A dermatologist can distinguish persistent acne from another condition and choose the appropriate treatment. Repeatedly treating small bumps as acne is not a substitute for getting the diagnosis right.34

Who gets it, and is it contagious?

Periorificial dermatitis is particularly common in young and middle aged women, but children can develop it too. Dermatitis means inflammation of the skin; the name does not mean an infection. It is not contagious and does not mean the skin is unclean. Changing from the word perioral to periorificial does not change those facts.134

What should you do first?

1. 1Arrange an assessment if the rash persists or you are unsure whether it is acne, eczema or periorificial dermatitis.
2. 2Discuss facial steroid use with the prescriber. Topical corticosteroids are a recognised association and suspected triggers should be discontinued. The rash can temporarily flare after stopping.
3. 3Remove products that irritate the affected skin or coat it heavily. Oily cosmetics, particularly moisturizers, can worsen perioral dermatitis.
4. 4Have prescribed inhaled or oral steroids reviewed rather than changing them yourself. For children using inhalers, wiping the inhaler clean helps minimise steroid exposure.

Does the location change the treatment?

The treatment approach is shared: address suspected triggers and use prescription treatment when needed. Doctors can prescribe antibiotic creams or gels, or oral antibiotics. Severe disease that does not respond can require other prescription options. A different location name is not, by itself, a reason to buy a different skincare routine.4

For children, mild cases can be treated with topical antibiotics such as metronidazole or erythromycin. More persistent or severe cases can need oral antibiotics. Oral tetracyclines should be avoided in children under 12; a clinician chooses an age appropriate alternative.2

Expect treatment to take weeks rather than days. In children, clearance with topical antibiotics typically takes 3 to 8 weeks. Untreated perioral dermatitis can last months or years, so a persistent rash deserves treatment rather than indefinite waiting. A temporary flare after stopping facial steroids does not automatically mean restarting them is the right response.23

Could it be a toothpaste reaction instead?

Toothpaste can cause a separate allergic or irritant rash around the mouth. These reactions are uncommon. Contact allergy often affects both lips with dryness, itching, pain or blistering, and can extend onto surrounding skin. Flavourings are the main toothpaste allergens; sodium lauryl sulphate can irritate the skin around the mouth. Fluoride is not the only possible suspect.6

If contact allergy is suspected, patch testing can help identify the trigger, including testing relevant toothpaste ingredients and your own products. Contact reactions often settle within a few weeks after avoiding the responsible product. Perioral describes an address, not a culprit, so the vocabulary cannot conduct the investigation.6