Rosacea: Causes, Subtypes, Treatment, and How to Tell It Apart from Acne
Medically reviewed by Dr. Celina Kazumi Iwasa, MD, Board-Certified Dermatologist · Last updated June 2026
Rosacea is a chronic inflammatory condition that turns temporary facial blushing into persistent redness, visible blood vessels, and sometimes acne-like bumps — yet it isn't acne, and treating it like acne often makes it worse. Many people live with undiagnosed rosacea for years, attributing their flushing to 'sensitive skin' or embarrassment. Understanding the different subtypes and their specific treatments is the key to getting the condition under control.
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Quick Answer
Rosacea is a common, chronic skin condition that primarily causes persistent facial redness and visible blood vessels, often accompanied by small, pus-filled bumps. It typically affects adults over 30, particularly those with fair skin who blush easily. While the exact cause is unknown, symptoms often flare up due to triggers like sun exposure, stress, spicy foods, or alcohol. There is no cure, but managing triggers, using gentle skincare, and seeking medical treatments like topical creams or laser therapy can effectively keep symptoms under control.
Symptoms
- Persistent facial redness, especially central face
- Visible blood vessels (telangiectasia) on nose and cheeks
- Swollen, red bumps that may contain pus (papulopustular type)
- Eye irritation, dryness, and redness (ocular rosacea)
- Burning or stinging sensations on the face
- Enlarged, bulbous nose (rhinophyma) - more common in men
Severity & Progression
What Causes Rosacea
The exact cause of rosacea remains incompletely understood, but research has identified several interacting factors.
Vascular instability is at the core — blood vessels in the face dilate too easily and stay dilated too long. Over time, this leads to persistent redness and the development of visible blood vessels (telangiectasia) that don't constrict back to normal.
Immune dysregulation plays a key role. People with rosacea have elevated levels of cathelicidin, an antimicrobial peptide that in excess causes inflammation and blood vessel growth. An enzyme called kallikrein 5 processes cathelicidin into forms that are particularly inflammatory in rosacea skin.
Demodex mites — microscopic mites that live in hair follicles and are present on everyone's face — are found in significantly higher numbers on rosacea-affected skin. The bacterium Bacillus oleronius, which lives inside Demodex, may trigger the immune response. This is why ivermectin (an anti-parasitic) is effective for rosacea — it reduces the Demodex population.
Neurovascular factors explain why emotional stress, temperature changes, and spicy food trigger flushing — the nerves controlling facial blood vessels are hypersensitive in rosacea.
Genetics contribute: rosacea clusters in families, and genome-wide studies have identified associations with genes involved in immune regulation and inflammation. It's most common in people of Celtic and Northern European descent, though it occurs in all ethnicities and is likely underdiagnosed on darker skin.
How Rosacea Differs from Similar Conditions
Several conditions can look similar. Here's how to tell them apart — though a healthcare professional can provide a definitive diagnosis.
| Condition | Key Difference from Rosacea |
|---|---|
| Acne Vulgaris | Acne produces comedones (blackheads and whiteheads) — rosacea never does. Acne typically starts in the teens; rosacea after 30. Acne treatments like benzoyl peroxide and retinoids can irritate and worsen rosacea. |
| Seborrheic Dermatitis | Greasy, yellowish scales on the scalp, eyebrows, and nasolabial folds. Caused by Malassezia yeast. Can coexist with rosacea but requires antifungal treatment. |
| Lupus (Butterfly Rash) | The malar rash of lupus crosses the bridge of the nose in a butterfly pattern and spares the nasolabial folds. Lupus is a systemic disease with joint pain, fatigue, and other organ involvement. Blood tests (ANA) help distinguish. |
| Contact Dermatitis | Rash appears after exposure to a specific product. Distribution matches where the product was applied. Resolves when the trigger is removed. No blood vessel involvement. |
| Keratosis Pilaris on Cheeks | Rough, bumpy texture on the cheeks caused by keratin plugs. No redness, flushing, or blood vessels. Affects children and adolescents more commonly. Responds to gentle exfoliation. |
Treatment: What Actually Works
Rosacea treatment depends on which subtype(s) are present. Many people have features of more than one subtype.
For persistent redness and flushing (erythematotelangiectatic):
Brimonidine gel and oxymetazoline cream temporarily constrict blood vessels to reduce visible redness for 8–12 hours. They're useful for events or important days but don't provide long-term improvement.
Laser and light therapies — pulsed dye laser (PDL) and intense pulsed light (IPL) — are the most effective treatments for persistent redness and visible blood vessels. They selectively target and destroy dilated blood vessels without damaging surrounding skin. Multiple sessions are typically needed, and results can be long-lasting.
For bumps and pustules (papulopustular):
Topical ivermectin (1%) is first-line — it reduces Demodex mites and has anti-inflammatory properties. Applied once daily, it produces sustained improvement.
Topical metronidazole (0.75–1%) and azelaic acid (15%) are effective alternatives with anti-inflammatory properties.
Low-dose doxycycline (40mg modified-release) is the systemic treatment of choice. At this dose, it acts as an anti-inflammatory, not an antibiotic, and can be used long-term without contributing to antibiotic resistance.
For ocular rosacea:
Warm compresses, lid hygiene (gentle cleaning of the eyelid margins), and preservative-free artificial tears form the foundation. Oral doxycycline is often needed for moderate-to-severe eye involvement. Referral to an ophthalmologist is warranted if symptoms are significant.
For all subtypes:
Gentle skincare is essential — avoid alcohol-based products, fragrances, witch hazel, and physical scrubs. Use a gentle, pH-balanced cleanser and a mineral-based sunscreen (zinc oxide or titanium dioxide) daily. Identify and avoid your personal triggers through a diary.
Check your products: See if your shampoo or skincare contains these ingredients:
When Rosacea Is Actually Something Else
If you're developing 'rosacea' for the first time and you're under 25, reconsider the diagnosis — acne is far more common at that age, and the treatment is different. If facial redness is concentrated across the bridge of the nose in a butterfly shape and you also have joint pain or fatigue, lupus should be investigated with blood tests. If redness appeared after starting a new skincare product, contact dermatitis is more likely. And if you develop sudden, severe facial swelling (angioedema) along with redness, allergic reaction or hereditary angioedema should be considered — seek medical attention promptly.
Rosacea Across Skin Types and Hair Types
Rosacea is widely considered a condition of fair-skinned people, but this is partly a recognition bias — it absolutely occurs in people with darker skin, where it may be significantly underdiagnosed.
On Fitzpatrick IV–VI skin, the hallmark redness of rosacea may appear as a dusky brown or violet discolouration rather than pink-red. Visible blood vessels (telangiectasia) are harder to see against darker skin. The bumps and pustules of papulopustular rosacea are usually still recognisable, but the background redness they sit on may not be.
Dermatoscopy (using a handheld magnifier) can help clinicians identify telangiectasia that aren't visible to the naked eye on darker skin.
Treatment is the same regardless of skin tone, but particular care should be taken with laser treatments on darker skin — pulsed dye lasers and IPL carry a higher risk of post-inflammatory hyperpigmentation or burns in Fitzpatrick IV–VI skin types. Longer wavelength lasers (Nd:YAG) are generally safer for darker skin. Always seek a practitioner experienced in treating rosacea across skin tones.
Self-Care Tips
- Identify and avoid personal triggers (keep a diary)
- Use gentle, fragrance-free skincare products
- Apply broad-spectrum SPF 30+ sunscreen daily
- Protect face from cold, wind, and extreme temperatures
- Use green-tinted makeup to neutralize redness if desired
When to See a Doctor
If facial redness is persistent or worsening, if you develop bumps or pustules, if your eyes are affected (dryness, irritation, redness), or if the condition is affecting your self-esteem or social interactions.
Frequently Asked Questions
How is rosacea different from acne?
While both conditions can cause facial bumps, rosacea generally appears later in life (usually after age 30) and is accompanied by persistent redness, flushing, and visible blood vessels. Unlike acne, rosacea rarely involves blackheads or whiteheads. Acne treatments contain ingredients like salicylic acid that can severely irritate rosacea-prone skin, making a correct diagnosis crucial.
What does rosacea look like in its early stages?
In the beginning, you might notice that you flush or blush more easily than others. This passing redness on your cheeks, nose, chin, or forehead gradually becomes more persistent over time. As it progresses, tiny blood vessels may become visible under the skin, and you might feel a burning sensation when applying normal skincare products.
Can I treat rosacea at home?
You cannot cure rosacea at home, but daily habits play a massive role in managing it. The most important step is identifying and avoiding your triggers, such as hot drinks, alcohol, spicy foods, or extreme temperatures. Using gentle, fragrance-free cleansers and applying daily broad-spectrum sunscreen are essential home-care cornerstones to prevent flare-ups.
Will my rosacea go away on its own?
No, rosacea is a chronic condition that typically does not resolve without intervention. If left untreated, the redness, bumps, and visible blood vessels often worsen over time. In severe cases, especially in men, untreated rosacea can lead to a thickened, bulbous nose (rhinophyma). Consistent, long-term management is necessary to keep symptoms from progressing.
Does rosacea spread to other parts of the body?
Rosacea is primarily confined to the center of the face, including the cheeks, nose, chin, and forehead. Sometimes it can affect the eyes (ocular rosacea), causing redness, dryness, and a gritty sensation. However, it rarely spreads beyond the face to the neck or chest. It is also completely non-contagious, so you cannot spread it to others.
Can children get rosacea?
While it is possible for children to develop rosacea, it is exceedingly rare. The condition is overwhelmingly diagnosed in adults between the ages of 30 and 50. When children present with persistent red rashes or bumps on the face, it is much more likely to be eczema, childhood acne, or an allergic reaction. A doctor should evaluate any persistent childhood rash.
When should I see a doctor about facial redness?
You should consult a doctor or dermatologist if you experience persistent facial redness, visible blood vessels, or acne-like bumps that do not clear up. It is especially urgent to seek medical care if your eyes feel gritty, irritated, or red, as ocular rosacea can damage your vision if ignored. A professional can prescribe targeted therapies.
How can ScanSkinAI help with rosacea?
ScanSkinAI is a screening aid designed to review images of your skin and flag visible features commonly associated with rosacea, such as persistent redness or distinct bumps. It helps you track skin changes over time and gather information for your dermatologist appointments. However, the AI cannot provide an official medical diagnosis, so you must always consult a healthcare professional.
Related Symptoms
Explore symptom guides that may help you understand this condition better:
Further Reading
Related Conditions
Medical References
Information on this page is sourced from and verified against reputable medical resources:
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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.