Rosacea is a chronic inflammatory skin condition that causes persistent redness, visible blood vessels, and sometimes bumps or skin thickening on the face. It most commonly appears on the nose and cheeks, though it can spread to the forehead, chin, and even the eyes. The average age at diagnosis is around 51, but symptoms often begin years earlier with episodes of facial flushing that come and go before becoming more constant.
What Rosacea Looks Like
Rosacea doesn’t look the same in everyone. It’s classified into four subtypes based on which symptoms dominate, and you can have features of more than one at the same time.
The most common early form is persistent redness with intermittent flushing across the nose and cheeks. You may also notice tiny visible blood vessels (sometimes called spider veins) spreading across these areas. This is typically the first sign that something beyond normal blushing is going on.
A second form produces small red bumps and pus-filled spots that can look a lot like acne. The key difference is that rosacea bumps don’t come with blackheads or whiteheads, and they sit on a background of general redness. This distinction matters because acne treatments can actually make rosacea worse.
A third, less common form involves gradual thickening and enlargement of the skin, most often on the nose. The skin develops a bumpy, uneven texture with enlarged pores, and the nose can slowly become bulbous and reddish-purple. This is caused by overgrowth of oil glands and surrounding tissue. It progresses slowly and doesn’t resolve on its own. Though it’s the form most people picture when they hear “rosacea,” it actually develops in only a small percentage of cases, and mostly in men.
Rosacea Can Affect Your Eyes
About half of people with facial rosacea also develop eye symptoms, sometimes before any skin changes appear. Ocular rosacea causes a range of problems: watery or bloodshot eyes, a gritty foreign-body sensation, burning, stinging, dryness, light sensitivity, and blurred vision. The eyelid margins often become inflamed, and recurring styes are a frequent sign.
The skin around the eyes may look dry, and tiny visible blood vessels can appear on the eyelids and the white part of the eye. Because these symptoms overlap with common eye conditions like dry eye syndrome, ocular rosacea is often missed or misdiagnosed. If you have facial rosacea and notice persistent eye irritation, it’s worth mentioning both to your dermatologist or eye doctor so they can connect the dots.
What Causes It
Rosacea doesn’t have a single cause. It develops from a combination of immune system overactivity, blood vessel instability, and environmental triggers working together.
In rosacea-prone skin, the innate immune system is altered. The skin overproduces a natural antimicrobial protein that, in its overactive form, triggers inflammation and stimulates new blood vessel growth. This helps explain both the redness and the bumps: the immune system is essentially reacting too strongly to stimuli that wouldn’t bother normal skin. UV exposure makes this worse by ramping up the production of proteins that promote new blood vessel formation, which is why sun exposure is such a consistent trigger.
Tiny mites called Demodex that live naturally in hair follicles also play a role. Everyone has some of these mites on their skin, but people with rosacea tend to have significantly higher numbers. The mites appear to manipulate the skin’s immune response in a way that allows them to keep multiplying while simultaneously provoking ongoing inflammation. This creates a cycle: the mites trigger immune activity, the immune response fails to fully eliminate them, and the chronic low-grade inflammation keeps the redness and irritation going. Roughly half of patients with early-stage rosacea already show abnormally high mite density.
Common Triggers
Rosacea flares are driven by specific triggers that vary from person to person, but large surveys have identified consistent patterns. In a National Rosacea Society survey of over 1,000 patients, 52% named alcohol as a trigger (red wine worse than white), 45% cited spicy foods, and about a third pointed to hot coffee or tea.
These triggers share a common mechanism. Spicy foods, hot drinks, alcohol, vanilla, cinnamon, and even UV radiation all activate the same type of receptor on sensory nerves and skin cells. When these receptors fire, blood vessels dilate and flushing follows. Foods containing a compound called cinnamaldehyde, including tomatoes, citrus fruits, and chocolate, can do the same. Histamine-rich foods like aged cheese, sauerkraut, wine, and processed meats are another category to watch.
Beyond food, environmental factors play a major role. Sun exposure, wind, extreme temperatures (both hot and cold), and emotional stress are among the most reported non-dietary triggers. The temperature of your food and drink matters too: hot beverages increase blood flow to the face through a combination of heat-driven dilation and nervous system activation. Some people find that letting coffee or tea cool slightly before drinking makes a noticeable difference.
How It’s Treated
Rosacea can’t be cured, but it can be managed well enough that flares become infrequent and redness fades significantly. Treatment depends on which symptoms are most prominent.
For the bumps and pustules, first-line topical treatments include ivermectin (which also reduces Demodex mite populations), azelaic acid, and metronidazole. These are applied directly to the skin, typically once or twice daily, and most people see meaningful improvement within a few weeks to a couple of months. For persistent background redness and flushing, separate topical treatments work by temporarily constricting blood vessels, reducing visible redness for several hours at a time.
Skin thickening on the nose, when it becomes pronounced, generally doesn’t respond to creams or medications alone. It’s typically addressed with procedures that reshape the excess tissue and restore a smoother contour.
Skincare Ingredients to Avoid
What you put on your face daily matters as much as any prescription. In National Rosacea Society surveys, patients identified several common skincare ingredients that triggered irritation: alcohol (66%), witch hazel (30%), fragrance (30%), menthol (21%), peppermint (14%), and eucalyptus oil (13%). These are found in many toners, cleansers, aftershaves, and even products marketed as “soothing.”
A good rule of thumb is to choose fragrance-free, alcohol-free products with short ingredient lists. Gentle cleansers, mineral-based sunscreens, and simple moisturizers form the backbone of rosacea-friendly skincare. Sunscreen is especially important given UV light’s direct role in worsening the underlying inflammation. Physical sunscreens containing zinc oxide or titanium dioxide tend to be better tolerated than chemical sunscreen formulas, which can sting sensitive rosacea-prone skin.
Rosacea vs. Other Conditions
Rosacea is frequently confused with acne, eczema, allergic reactions, or lupus. A few features help distinguish it. Rosacea redness is centered on the nose and cheeks and tends to be persistent rather than coming and going with a rash. Unlike acne, it doesn’t produce blackheads or deep cysts. Unlike eczema, the skin isn’t typically scaly or intensely itchy. And unlike the butterfly-shaped rash of lupus, rosacea usually involves visible blood vessels and responds to known dietary and environmental triggers.
If you’re noticing redness that doesn’t go away, flushing episodes that seem disproportionate to the situation, or small bumps that won’t respond to acne treatments, those are the hallmarks worth paying attention to. Rosacea tends to worsen gradually over time without treatment, so earlier management generally means better long-term control.