What is rosacea, and what are its symptoms?
Rosacea is a chronic inflammatory skin condition of the face, common in people over the age of 30 and more prevalent in women with fair skin. It occurs in flare-ups and primarily affects the central face: the nose, cheeks, forehead, and chin.
Typical symptoms:
- Transient redness (erythema, orflushing) that later becomes persistent.
- Small dilated blood vessels visible on the skin’s surface (telangiectasias, couperose).
- Inflammatory papules and pustules (without comedones, unlike acne).
- Sensations of heat, tingling, tightness, and burning.
- Reactive skin that is sensitive to cosmetics.
- Possible ocular involvement (ocular rosacea): red, dry, irritated eyes; sensation of grit in the eyes; blepharitis.
- More rarely, skin thickening (rhinophyma on the nose), especially in men.
What causes rosacea?
The mechanisms underlying rosacea involve several factors:
- Abnormal skin vasomotor function: facial blood vessels that dilate easily.
- Chronic, low-grade inflammation involving the innate immune system (cathelicidin, kallikrein 5).
- High density of *Demodex folliculorum* (commensal mites of the hair follicles) in affected individuals—the target of treatment with topical ivermectin.
- Genetic predisposition (frequent family history).
- Possible neurovascular component (release of neuropeptides).
The most commonly reported triggers: sun exposure, heat (sauna, steam room, hot baths), intense cold, wind, alcohol (red wine in particular), spicy foods, hot beverages, stress, certain irritating cosmetics (denatured alcohol, fragrances, harsh exfoliants), long-term use of topical corticosteroids on the face (which can cause or worsen rosacea).
How can rosacea be relieved and treated?
Treatment is tailored to the type and severity of the condition, based on a dermatologist’s recommendation:
- Prescription topical treatments:
- Metronidazole gel or cream: a long-established treatment, well-tolerated, used for papulopustules.
- Ivermectin cream (Soolantra): effective against the inflammatory component and *Demodex*.
- 15% azelaic acid gel: acts on inflammation and redness.
- Brimonidine gel (Mirvaso): vasoconstrictive effect on erythema, for spot application. Caution: possible rebound effect upon discontinuation (increased redness); should be used under medical supervision.
- Prescription oral treatments:
- Low-dose cyclines (doxycycline 40 mg extended-release): anti-inflammatory action independent of the antibacterial effect. Precautions: photosensitivity; contraindicated during pregnancy and in children under 8 years of age.
- Low-dose oral isotretinoin in a specialized setting for severe, resistant papulopustular, or phymatous forms. Teratogenic: ANSM pregnancy prevention program, strict laboratory monitoring, and surveillance for adverse effects (skin and mucosal dryness, psychological effects to be reported).
- Lasers and light therapies in the doctor’s office:
- Vascular lasers (KTP, pulsed dye laser): highly effective for telangiectasias and persistent erythema.
- Intense Pulsed Light (IPL): an alternative for diffuse redness; multiple sessions are generally required.
- Rhinophyma: CO₂ laser, electrocoagulation, dermabrasion, or surgery in a specialized setting.
- Ocular rosacea: ophthalmological evaluation, eyelid hygiene, artificial tears, and sometimes oral cyclines in courses of treatment.
Avoiding long-term use of topical corticosteroids on the face is essential: they can trigger or worsen rosacea and cause rosacea-like perioral dermatitis upon discontinuation (rebound effect).
What precautions can be taken to limit rosacea flare-ups?
A skincare routine tailored to sensitive and reactive skin helps limit flare-ups:
- Very gentle cleansing with lukewarm (never hot) water using a syndet or a cleanser for sensitive skin, without traditional soap or denatured alcohol.
- Pat dry without rubbing.
- Soothing skincare products containing niacinamide, allantoin, panthenol B5, thermal water, ceramides, and hyaluronic acid.
- Avoid harsh mechanical exfoliants, strong chemical peels, rotating brushes, and masks with a “tightening” or “warming” effect.
- Daily SPF 30 to 50sun protection with mineral filters (zinc oxide, titanium dioxide)—often better tolerated by reactive skin—in lightweight, non-occlusive formulas. See sun protection.
- Green-based makeup to visually neutralize redness; fragrance-free and non-comedogenic formulations.
- Limit identified triggers (alcohol, spicy foods, hot beverages, excessive heat, unprotected UV exposure).
- Identify cosmetics that are poorly tolerated (strong fragrances, irritating preservatives, denatured alcohol).
What natural skincare products can complement treatment?
A few approaches can be used alongside treatment:
- Purealoe vera gel: soothing and well-tolerated in most cases.
- Mild, alcohol-free floral waters (rose, cornflower) applied as cool sprays.
- Cool compresses (lukewarm, not ice-cold water) in case of a flushing episode.
- Omega-3-rich foods (fatty fish, nuts, flaxseeds) for their effect on systemic inflammation.
- Stress management (cardiac coherence, meditation, sophrology, yoga).
Caution: Topical application of chamomile may cause an allergic reaction in people sensitive to the Asteraceae family (which includes daisies, dandelions, and arnica). Essential oils should be avoided as part of a routine for skin with rosacea (reactive skin). Test any new product on the inner elbow 24 to 48 hours before regular use.
What are the different types of rosacea?
Rosacea encompasses several subtypes that often coexist in the same person:
- Erythematous-telangiectatic rosacea: persistent redness (erythema) and small dilated blood vessels (telangiectasias, couperose). Frequent sensations of heat and tingling.
- Papulopustular rosacea: red papules and inflammatory pustules on an erythematous background, without comedones (unlike acne).
- Phymatous rosacea: chronic skin thickening with hypertrophy of the sebaceous glands. Rhinophyma on the nose is the most common form, primarily in men.
- Ocular rosacea: involvement of the eyelids and ocular surface (blepharitis, dryness, a sensation of grit in the eye, and sometimes keratitis).
Each subtype dictates the treatment strategy (topical agents, oral medications, lasers, or surgery, as appropriate), often in combination.
Does rosacea affect only the skin?
No, ocular rosacea may accompany or precede skin involvement in nearly one-third of those affected. Possible symptoms include:
- Red, dry, irritated eyes.
- A sensation of grit in the eyes, stinging, and tearing.
- Blepharitis (inflammation of the eyelids) with Meibomian gland dysfunction.
- Occasional blurred vision.
- More rarely, corneal involvement (keratitis) with risk to vision.
If these symptoms are present, an ophthalmology consultation allows for specific treatment (eyelid hygiene, artificial tears, sometimes oral cyclines in courses of treatment, and ocular surface care).
Can the onset of rosacea be prevented?
There is no known primary prevention method. However, certain measures can help limit flare-ups and reduce their severity in predisposed individuals:
- Strict daily sun protection (the primary identified trigger).
- Identification and avoidance of personal triggers (keeping a flare-up diary can help).
- A gentle skincare routine free of irritating ingredients.
- Limit alcohol, spicy foods, hot beverages, and excessive heat in daily life.
- Avoid long-term use of topical corticosteroids on the face.
- Maintain a balanced lifestyle: get enough sleep, eat a varied diet rich in omega-3s, manage stress, and engage in appropriate physical activity (opt for moderate exercise rather than intense exercise in hot conditions).
How does rosacea affect daily life?
The impact can be significant:
- Aesthetically: highly visible redness in the central face, particularly in fair skin types.
- On self-esteem and social life: a feeling of being “stared at,” and limitations on certain activities (eating out, group sports, exposure to heat).
- It is often mistaken for alcohol consumption or a skin infection, which can be stigmatizing.
- Increased risk of anxiety and depressive disorders, which should be addressed as part of comprehensive care.
- Chronic skin discomfort (tingling, burning).
Structured dermatological care, combined with psychological support in cases of significant impact, helps patients cope better with the condition on a daily basis.
What are the latest developments in the treatment of rosacea?
Several recent developments are enhancing treatment options:
- Topical ivermectin (Soolantra): targets *Demodex folliculorum*; its effectiveness in reducing the inflammatory component has been confirmed.
- Topical brimonidine (Mirvaso): a topical vasoconstrictor for persistent redness; use with caution due to the risk of a rebound effect.
- Oxymetazoline cream (Rhofade): another topical vasoconstrictor, available in certain countries.
- Doxycycline 40 mg LP: low-dose anti-inflammatory with no significant antibacterial effect (lower risk of resistance); the standard treatment regimen for moderate to severe papulopustular rosacea.
- Next-generation vascular lasers and IPL with refined protocols.
- Research on the skin microbiome and topical prebiotics/postbiotics; first-generation cosmetic products now available.
- Clinical evaluations of molecules targeting specific inflammatory pathways (cathelicidin, kallikrein, neurovascular pathways).
A dermatology consultation helps determine the options best suited to the patient’s profile and the severity of their condition.
