Rosacea: What It Is, What Triggers It, and How to Treat It

Rosacea affects an estimated 14 million Americans, yet many people who have it don't know it — or have been managing it as though it were something else entirely. Treating rosacea like regular acne, for example, often makes it worse. Getting the right diagnosis is the starting point.

What Rosacea Is

Rosacea is a chronic inflammatory skin condition primarily affecting the central face. It's characterized by episodes of flushing and persistent redness, and can involve visible blood vessels, acne-like bumps, and eye symptoms.

It typically affects adults, most commonly in the 30-60 age range, and is more common in people with lighter skin tones — though it occurs across all skin types.

The underlying cause isn't fully understood, but involves:

• Dysregulation of the immune system (a heightened inflammatory response in the skin)
• Neurovascular changes (abnormal blood vessel reactivity causing flushing)
• Possible involvement of Demodex mites (microscopic mites that live on everyone's skin in small numbers, but appear in higher concentrations in rosacea-prone skin)
• Microbiome disruption

The Four Subtypes

Rosacea doesn't look the same in everyone. There are four recognized subtypes, and many people have overlapping features:

Subtype 1 — Erythematotelangiectatic (ETR)

Persistent central facial redness, flushing, and visible blood vessels (telangiectasias). Skin may feel sensitive and stinging. No acne-like bumps.

Subtype 2 — Papulopustular

Persistent central redness combined with inflammatory papules (bumps) and pustules that resemble acne. This is sometimes called "acne rosacea" — though the treatment is different from true acne. The bumps don't have the blackheads and whiteheads typical of acne.

Subtype 3 — Phymatous

Skin thickening, particularly on the nose (rhinophyma). More common in men. Causes a bulbous, textured appearance.

Subtype 4 — Ocular rosacea

Eye symptoms: redness, dryness, irritation, burning, or the feeling of something in the eye. Often underdiagnosed because it may not be associated with facial symptoms.

Common Triggers

Rosacea is a condition of flares — periods of worsening followed by relative calm. Identifying and minimizing personal triggers is a central part of management.

Common triggers include:

• Sun exposure — the most consistent trigger; UV light activates the inflammatory cascade
• Heat — hot weather, hot beverages, hot showers, saunas
• Spicy food — activates a similar pathway to heat
• Alcohol — particularly red wine and spirits
• Exercise — increased body temperature and blood flow
• Emotional stress — triggers flushing and inflammation
• Certain skincare products — alcohols, fragrance, harsh exfoliants, some actives
• Some medications — vasodilators (calcium channel blockers) may worsen flushing

Keeping a simple log of flares and what preceded them helps identify your personal pattern.

Treatment Approaches

Trigger avoidance

The foundation. Sun protection (SPF 30+, every day, with physical sunscreens being particularly well-tolerated) is especially important.

Topical medications

• Metronidazole: An antibiotic gel or cream with anti-inflammatory properties; first-line for papulopustular rosacea
• Azelaic acid: Anti-inflammatory, reduces redness and bumps; also helps with any associated hyperpigmentation
• Ivermectin 1% cream (Soolantra): Targets Demodex mites; effective for inflammatory rosacea
• Brimonidine / Oxymetazoline: Topical vasoconstrictors that temporarily reduce facial redness; work quickly but effects last only hours

Oral medications

• Low-dose doxycycline (Oracea): At 40mg once daily, this dose works as an anti-inflammatory rather than an antibiotic. Effective for papulopustular rosacea with minimal antibiotic side effects.
• Oral antibiotics at full dose: Sometimes used for flares or more severe presentations, typically for short courses.

Laser and light-based treatments

Pulsed dye laser and intense pulsed light (IPL) can target visible blood vessels and persistent redness in ETR subtype rosacea. These are performed by dermatologists.

Gentle skincare

Rosacea-prone skin benefits from:

• Fragrance-free, gentle cleansers
• Rich, barrier-supporting moisturizers
• Mineral sunscreens (typically better tolerated than chemical)
• Avoiding harsh actives: high-concentration AHAs, BHAs, alcohol, and exfoliants

What Not to Do

Don't treat papulopustular rosacea as regular acne. Benzoyl peroxide can irritate rosacea significantly. Salicylic acid at high concentrations can as well. Tretinoin, while sometimes used carefully in rosacea, often irritates it significantly at typical doses.

Getting a clear diagnosis from a physician changes the approach.

Ready to talk to a real doctor? Get started with Coral Health today.