Acne vs Rosacea: How to Tell Them Apart and Why It Matters

Acne and rosacea can both give you red bumps and pus-filled spots, but they are different conditions with different treatments. The quickest tell is blackheads and whiteheads: acne has them, rosacea doesn’t. Rosacea also tends to come with flushing, persistent central-face redness and stinging, and it usually starts later in life. Getting the diagnosis right matters, because several staple acne products can make rosacea worse.

What is rosacea, and how is it different from acne?

Acne is a disease of the hair follicle and oil gland. StatPearls describes four drivers: excess oil, plugged follicles, the bacterium Cutibacterium acnes, and inflammation. The first lesion is a clogged pore (a comedo), which is why blackheads and whiteheads are the signature of acne.

Rosacea is a long-term inflammatory condition that causes redness and a rash, usually on the nose and cheeks, according to the US National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS). Scientists don’t know exactly what causes it, though NIAMS lists genes, UV light and skin microbes as possible contributors. StatPearls groups it into four overlapping types: redness with visible blood vessels, papules and pustules (the “acne-like” type), thickened skin (usually on the nose), and eye involvement.

The type most often confused with acne is papulopustular rosacea, because its bumps really do look like pimples. The American Academy of Dermatology (AAD) says many people with rosacea get these acne-like breakouts, and they appear on all skin tones.

How can you tell acne and rosacea apart?

1. Look for blackheads and whiteheads

This is the single most useful clue. StatPearls notes that rosacea lacks comedones, and that while the two share papules and pustules, the presence of comedones is unique to acne. A separate StatPearls chapter on acne look-alikes adds that rosacea doesn’t show comedones or greasy skin (seborrhea) and mainly affects the face symmetrically. If you’re not sure what a comedo looks like, blackheads vs whiteheads has a quick guide. Closed comedones can be subtle, so feel for small, rough, skin-coloured bumps on the forehead and chin as well as looking for dark dots.

2. Notice flushing and background redness

Rosacea often starts as a tendency to flush or blush, with redness that lasts longer over time. The AAD describes redness that stays for weeks, months or longer, plus visible blood vessels on the cheeks or nose. Acne spots can leave red marks, but the skin between spots isn’t usually persistently flushed.

3. Pay attention to burning and stinging

The NHS lists a burning or stinging feeling when using water or skincare products as a main rosacea symptom. The AAD flags the same sign, along with acne-like breakouts that don’t respond to acne treatment.

4. Consider your age

Acne usually begins in puberty, and about 85% of people aged 12 to 24 have at least minor acne, per the AAD. Rosacea usually shows up later: DermNet says it typically presents after age 30 and most often starts between 30 and 60, and a 2018 meta-analysis found it predominantly affected people aged 45 to 60. Adults can absolutely get acne too (see hormonal acne in adults), so age is a hint, not a rule.

5. Check your eyes

Gritty, dry, itchy, burning or sore eyes point toward rosacea. The AAD says about 50% of people with rosacea will have a flare that affects their eyes. Acne doesn’t do this.

How common is rosacea?

A 2018 systematic review and meta-analysis of 32 studies (about 26.5 million people) estimated rosacea affects 5.46% of the general adult population, with somewhat higher rates in women (5.41%) than men (3.90%). The authors noted questionnaire-based studies gave higher estimates than studies where a clinician examined people. Rosacea is more often diagnosed in people with fair skin, but the AAD warns it is easily missed in darker skin tones, where it may show as dry, swollen skin, a dusky brown discoloration and a warm feeling rather than obvious pink redness.

Why can acne products make rosacea worse?

Rosacea-prone skin is easily irritated, and many acne treatments work partly by drying and peeling the skin. Specific problems the sources flag:

• Benzoyl peroxide. The AAD states that benzoyl peroxide can irritate sensitive skin, making it an unacceptable treatment for rosacea. The exception is a prescription encapsulated benzoyl peroxide 5% cream, which releases the ingredient gradually.
• Exfoliating acids and harsh ingredients. The AAD’s rosacea skin care list tells people to avoid alcohol, camphor, fragrance, glycolic acid, lactic acid, menthol, sodium lauryl sulfate and urea. DermNet also advises avoiding exfoliants and alcohol-based products.
• Retinoids. Adapalene and tretinoin aren’t among the standard rosacea treatments in the sources I reviewed, and DermNet lists redness, peeling, dryness and irritant dermatitis as common retinoid side effects. That doesn’t mean a dermatologist would never use one, but self-treating suspected rosacea with a retinoid is likely to sting.
• Steroid creams. Hydrocortisone can seem to calm redness at first, but StatPearls warns topical steroids should be avoided in rosacea because they’re associated with rebound flaring.

How do treatments differ?

For acne, the 2024 AAD guideline strongly recommends benzoyl peroxide, topical retinoids, topical antibiotics and oral doxycycline, with isotretinoin for severe or scarring acne.

For rosacea, the best evidence comes from a 2015 Cochrane review of 106 trials and 13,631 participants. It rated the evidence as high quality for topical azelaic acid and ivermectin and moderate quality for topical metronidazole against the bumps, found that ivermectin was slightly more effective than metronidazole, that brimonidine reduces redness for up to about 12 hours, and that doxycycline 40 mg worked about as well as 100 mg with fewer stomach side effects. The AAD’s treatment page lists azelaic acid, ivermectin, metronidazole, minocycline foam and encapsulated benzoyl peroxide for acne-like rosacea breakouts, and brimonidine gel or oxymetazoline cream for persistent redness. Lasers can help visible blood vessels.

The Cochrane authors also flagged real limitations: many trials had an unclear risk of bias, most lasted only 8 to 12 weeks, and few measured quality of life or how long improvement lasted. So even for rosacea’s best-studied treatments, we know more about short-term results than long-term ones.

A couple of treatments overlap. Azelaic acid is used for both conditions, and oral doxycycline and isotretinoin appear in both toolkits, though doses and goals differ. Rosacea can’t be cured, per the NHS, so the aim is control. The AAD says topical treatments may give slight improvement in 3 or 4 weeks, with a noticeable difference usually taking 2 to 3 months.

What should you do while you wait for an appointment?

• Go gentle. A mild, non-soap cleanser applied with fingertips and patted dry, as the AAD suggests, suits both conditions.
• Wear sunscreen daily. The AAD recommends broad-spectrum SPF 30 or higher, and mineral formulas with zinc oxide or titanium dioxide if your skin is sensitive. More in moisturizer and sunscreen for acne.
• Track triggers. StatPearls lists UV light, spicy food, weather changes and alcohol as common rosacea triggers. If your flares follow these, that’s a useful clue to bring to your appointment.
• Patch-test new products and pause anything that stings.

Frequently asked questions