Article · November 6, 2026
Bumps under your eyes: rosacea or periocular dermatitis?
Where the bumps sit, what the rest of your face is doing, and what touched your skin last: the clues clinicians use, plus what to log first.
Articles
Writing on rosacea, grounded in the literature.
Trigger explainers, methodology notes, and category analysis. Primary-source citations on every clinical claim.
Article · November 5, 2026
Rosacea and Hot Tubs, Saunas, and Steam Rooms: Which Heat Exposure Actually Flares You
A single 'avoid heat' rule hides which exposure actually flushes you. Dry heat, humid heat, immersion and cooldown speed each load skin differently, and you can log the difference.
Article · November 4, 2026
Rosacea Flares After Flying: A Trip Stacks Five Triggers at Once, and Your Diary Logs None of Them
A flight puts heat, alcohol, stress, sun and a strained skin barrier into one day. Log the trip as one exposure, then compare trips to find the layer that matters.
Article · November 2, 2026
Why Did I Suddenly Develop Rosacea? Rebuild the Eight Weeks Before It Started
A sudden start is a data point. Rebuild a dated timeline of what changed in the weeks before, and hand your dermatologist dates they can work with.
Article · October 30, 2026
Can You Have Rosacea Without Redness? What Dusky, Warm, and Stinging Skin Looks Like on Brown and Black Skin
On brown and Black skin, rosacea often shows up as heat, sting, and swelling before anyone sees pink. Here's what that looks like and how to log it.
Article · October 29, 2026
Recurring Styes and Chalazia: When the Eyelid Bump Is a Rosacea Sign
Repeat eyelid lumps usually trace back to the oil glands on the lid margin, and in some people that's rosacea. Stye vs chalazion, the common mimics, and what to log before your eye appointment.
Article · October 28, 2026
What a rosacea log is for when it never finds a trigger
Careful trackers who never find a culprit get told they failed. Why logs come up empty, and the four things that record still proves.
Article · October 28, 2026
Your Blood Pressure Pill May Be a Flushing Drug. Your Rosacea Diary Has No Field for It.
Calcium channel blockers, nitrates, niacin and facial steroids can all cause flushing. Here's how to log medications so the pattern actually shows up.
Article · October 26, 2026
Rosacea Face Swelling: Why You Wake Up Puffy and What a Dermatologist Needs to See
Facial swelling is a listed rosacea feature, but it fades before most appointments. How to tell flare puffiness from persistent edema, and how to photograph it.
Article · October 23, 2026
Does rosacea itch? Most patients in a 2025 cohort said yes
Most rosacea pages stop at redness and bumps. Itch is common, it can point people toward the wrong diagnosis, and it should go in your log as its own timed symptom.
Article · October 23, 2026
Does rosacea get worse over time? Why the progression question has no clean answer
Rosacea is called chronic and progressive. The long-term evidence for that is thinner than it sounds, and dated records are how you tell drift from a flare.
Article · October 22, 2026
Rosacea Flares After Starting Metronidazole: Purge, Irritation, or Wrong Diagnosis?
Early worsening on a rosacea topical has three ordinary explanations: the base, an allergy, or the diagnosis. A dated log tells them apart.
Article · October 22, 2026
Rosacea or just red skin? How long the redness takes to fade
A single photo can't tell a passing flush from redness that stays. A short timestamped photo series can, and it's what your dermatologist needs to see.
Article · October 21, 2026
Rosacea Is Scored by Facial Zone. Your Photo Log Probably Shoots One Angle.
One front-on selfie can't show where your rosacea lives. Here's a zone-by-zone capture protocol that matches how clinicians score severity.
Article · October 19, 2026
A Rosacea Log of Only Bad Days Convicts the Wrong Trigger
Log only flare days and your most common habit looks guilty by default. Calm days, logged the same way, are the comparison any trigger has to beat.
Article · October 17, 2026
White Wine, Iced Coffee, and the Two Rosacea Clocks Your Diary Mixes Up
Trigger lists merge flare evidence with onset-risk evidence into one rule. Here's what each study measured, and what your diary can and can't tell you.
Article · October 16, 2026
Color-Correcting Concealer Fixes the Photo. It Doesn't Fix the Flare.
Rosacea patients usually cover up on flare days, and those are the days a dermatologist needs to see. Here's what a corrected photo hides, feature by feature, and how to log around it.
Article · October 14, 2026
Can you have ocular rosacea without rosacea on your face?
Eye symptoms can come before visible facial rosacea, or without it. That gap is why "why did I get this?" rarely gets a straight answer.
Article · October 12, 2026
Lupus, Dermatomyositis, Carcinoid: The Red Faces That Get Called Rosacea
Rosacea is diagnosed partly by ruling other things out. Here are the systemic look-alikes a dermatologist has to exclude, and the details to log so they can.
Article · October 9, 2026
Rosacea Flares After Dental Work: The Trigger Category No Diary Template Includes
A dental visit stacks stress, heat, facial handling, anesthetic and medications into one day. Log each one separately, or the flare that follows can't be traced to anything.
Article · October 9, 2026
Topical Steroid Withdrawal Mimics Rosacea. The Timeline Is What Tells Them Apart
Topical steroid withdrawal can pass for severe rosacea on exam. It keeps time to the last steroid application, and a dated photo log is how you show that.
Article · October 7, 2026
Microneedling Is Trending. For Rosacea Skin, It's a Barrier-Disruption Bet That Doesn't Pay Off
The micro-injury that gives typical skin its 'glow' hits rosacea's weakest points: the barrier, innate immunity and heat-sensing nerves. Here's the evidence and the nuance.
Article · October 6, 2026
Rosacea Went Around Your Dermatologist and Straight to Your Feed
Short-form video is where many people first put a name to their redness. What it can't give them is a record, so the first dermatology visit starts from zero.
Article · October 6, 2026
Why Rosacea Patients Keep Using Doxycycline as an Antibiotic When It's Prescribed as an Anti-Inflammatory
Sub-antimicrobial doxycycline calms rosacea inflammation without trying to kill bacteria. Treating it like a regular antibiotic course is where adherence breaks down.
Article · October 3, 2026
None of the Rosacea Trigger Trackers Pair the Photo With the Note
Rosacea trackers log either what your skin looked like or what you were exposed to. Your dermatologist needs both on the same day, in the same entry.
Article · October 2, 2026
Rosacea and Rhinophyma: Why the Most Visible Subtype Gets the Least Research Funding
Phymatous rosacea is staged like a disease but treated like an ending, so patients reach the surgeon with no record of how their nose changed. That gap starves the research too.
Article · October 2, 2026
Botox for Rosacea Flushing Isn't Cosmetic Off-Label Guesswork Anymore
Intradermal botulinum toxin for rosacea works on nerves, vessels and mast cells. What the small trials support, what they don't, and how to judge your own result.
Article · September 30, 2026
The Rosacea Trigger Tracker You'll Find Is a PDF From 2011
Search for a rosacea trigger tracker and you get a printable diary, a spreadsheet, and single-purpose apps. None of them keep the one thing a dermatologist can check.
Article · September 29, 2026
The Rosacea Diary That Outlives a Bad Flare Day: Why Paper, PDF, and App Formats All Get Abandoned at the Same Point
Paper booklets, printable PDFs, and tracking apps all fail at the same moment: the flare day, when logging takes effort nobody has left.
Article · September 25, 2026
PM2.5 Is a Rosacea Trigger. Air Quality Index Isn't in Anyone's Log.
Cohort data links fine particulate pollution to rosacea flares, yet trigger lists still stop at diet, heat and alcohol. What to log alongside your photos instead.
Article · September 24, 2026
Six Rosacea Apps Exist. Patients Are Still Building Their Own Spreadsheets.
At least six rosacea trackers have shipped, and patient threads still recommend a hand-built spreadsheet. What that DIY artifact records is the real design brief.
Article · September 23, 2026
Ocular Rosacea Symptoms Feel Like Dry Eye. Here's the List That Tells Them Apart
Burning, gritty eyes during a flare often get treated as dry eye or allergies for months. Six checks, from the eyelid edge to your flare calendar, help sort them out.
Article · September 22, 2026
Your Rosacea Tracker Says 'AI-Optimized.' Where Are the Photos Actually Going?
Trackers for a condition that lives on your face advertise smarter logging and stay silent on custody. The disclosure gap is the story, and on-device processing is the answer to it.
Article · September 21, 2026
Rosacea and Retinol: The Buffering Protocol, Written Down Properly
Blanket avoidance is triage, not a protocol. The barrier literature supports a titration you can actually measure, and a log that tells irritation apart from a flare.
Article · September 18, 2026
The genetic case for tracking rosacea before you have it
Family history raises rosacea risk in the published genetics literature. Dermatology only starts documenting at symptom onset, which is exactly when the useful comparison point is already gone.
Article · September 17, 2026
You're avoiding wine. Your toner has more alcohol than beer.
Rosacea advice spends its energy on what you drink. The alcohol with a plausible route to the nerve endings in your face is sitting in the bottle by the sink.
Article · September 16, 2026
Your rosacea flares every spring. That's not a UV problem.
UV and pollen both worsen rosacea in spring, and they look identical on your cheeks. Most flare logs only have a field for one of them.
Article · September 15, 2026
Rosacea keeps getting classified as cosmetic. The clinical record says otherwise.
The cosmetic denial isn't a verdict on the medicine. It's a verdict on what your file shows, and most rosacea files show almost nothing a reviewer can use.
Article · September 14, 2026
When Trigger Avoidance Stops Working: Demodex Density and Treatment-Resistant Rosacea
Standard rosacea management assumes a flare is a response to something you did. Demodex density is a biological variable already resident on the skin, and no avoidance protocol lowers it.
Article · September 11, 2026
Rosacea runs in families. Here is what that actually changes about managing it.
A twin cohort puts roughly half of rosacea's variance down to genetics. The other half is the part a log can reach, and an inherited baseline makes finding it more urgent, not less.
Article · September 10, 2026
White Wine Isn't the Safe Rosacea Choice: What the Cohort Data Actually Says
Trading red wine for white is the most common rosacea substitution there is. The prospective cohort data puts white wine and liquor at equal or higher risk, and most trigger logs can't tell you either way.
Article · September 9, 2026
Alcohol-Based Toners Are Still in 'Sensitive Skin' Products Marketed to Rosacea Patients
Denatured alcohol, witch hazel and menthol keep turning up in the first five ingredients of products sold as soothing. The labeling rules guarantee less than most patients assume.
Article · September 8, 2026
Your Rosacea Antibiotic Isn't Actually an Antibiotic Dose
The 40 mg modified-release doxycycline used for rosacea works by damping the skin's inflammatory machinery, not by killing bacteria. That changes what resistance means and when you stop.
Article · September 7, 2026
The Histamine Load Your Rosacea Diary Doesn't Measure
Fermented food, aged cheese, cured meat, and wine add up across a day. When your combined histamine load tops your DAO enzyme threshold, the flare that feels random usually isn't.
Article · September 4, 2026
Rosacea burns before it blushes. Your tracking app doesn't know that.
Burning is rosacea's most common symptom and its earliest signal, yet photo-first apps only catch the redness that arrives later. A flare log should start with a sensation, not a snapshot.
Article · September 3, 2026
What Your Rosacea Photo Can't Tell Your Dermatologist Without Context
A timestamped photo captures severity at one moment. The questions that drive rosacea treatment, triggers, frequency, progression, live in the context around it.
Article · September 2, 2026
Subtype 2 Isn't a Tracking Unit. Here's What Is.
Your rosacea subtype doesn't change week to week. Your flushing episodes, papule counts, and eye-irritation days do. Track the things that actually move.
Article · September 1, 2026
COVID proved that immune events are a rosacea trigger class. Your log has no field for them.
A 34% post-COVID flare rate and a 2025 patient brief say infection and vaccination belong in your rosacea log. Almost none have the field.
Article · August 31, 2026
Your Rosacea Prescription Follows Features, Not Type Numbers
Dermatology stopped prescribing by subtype in 2017. Here's how feature-matched treatment works, and why a logged symptom set beats telling your derm 'I have type 2.'
Article · August 28, 2026
Red light therapy for rosacea: the before-and-after photos prove nothing
Red light devices are a mainstream rosacea purchase now, and the testimonials are everywhere. Here's why the before-and-after photos can't tell you whether they worked.
Article · August 27, 2026
Perioral dermatitis or rosacea: the distribution map that separates them
Perioral dermatitis and papulopustular rosacea look nearly identical, but the skin right against your lip line separates them. The boundary rule, and how to photograph it for your dermatologist.
Article · August 26, 2026
The rosacea classification updated. Treatment selection didn't.
Rosacea became overlapping phenotypes in 2017, but the treatment pipeline downstream still reasons in four subtypes, and concurrent activity slips through the log.
Article · August 25, 2026
The rosacea confound-testing protocol: how to prove which variable is actually responsible
Blaming the wine is a hunch, not a finding. Here are three controlled trials that isolate one variable from a compound flare so your log can settle the argument.
Article · August 24, 2026
The Rosacea Trigger That Resets Every Winter: Why Indoor Air Humidity Is the Variable Nobody's Logging
Forced-air heating drops indoor humidity below 30% for months, and it damages the rosacea barrier through water loss, not flushing. Most diaries never log it.
Article · August 21, 2026
Ocular rosacea doesn't resolve between flares the way skin rosacea does
Skin rosacea recedes between flares. Ocular rosacea leaves meibomian gland damage that accumulates whether you're flaring or not, and that changes what's worth logging.
Article · August 20, 2026
What to Log Before Your First Rosacea Appointment
A GP said 'could be rosacea, come back in two weeks.' The log that helps most is timestamped photos plus context, built to show phenotype, not a two-month food diary.
Article · August 19, 2026
Rosacea and Seborrheic Dermatitis at the Same Time: When Treating One Makes the Other Worse
Seborrheic dermatitis is rosacea's most common look-alike. The harder problem is having both at once, and only facial geography tells them apart.
Article · August 18, 2026
Antihistamines Sometimes Clear Rosacea, and the Reason Reveals Your Subtype
Two people with the same rosacea diagnosis and the same severity score can respond to cetirizine completely differently. That gap is diagnostic.
Article · August 17, 2026
Why Your Dermatologist Rates Your Rosacea Mild When It's Running Your Life
Clinicians grade the redness. You feel the bumps. A 2004 study named that gap, and it explains why a 'mild' rating can feel so wrong.
Article · August 14, 2026
The nine-month rosacea remission nobody mentions in prenatal appointments
Progesterone can calm rosacea through all three trimesters. The postpartum crash, plus sleep loss and a shorter list of breastfeeding-safe treatments, is where the flare hides.
Article · August 13, 2026
Your Dermatologist Can't Distinguish ETR from PPR Without These Three Things. A Written Diary Isn't One of Them.
ETR and PPR require opposite first-line treatments. A folder of untimed photos gives your dermatologist none of what separates them. Here's the three-part log that does.
Article · August 12, 2026
Laser Therapy Clears Rosacea Redness. The Safety Profile Changes by Skin Tone.
IPL and PDL target hemoglobin, but melanin absorbs the same wavelengths. What that means for Fitzpatrick IV-VI patients before they consent to an in-office procedure.
Article · August 11, 2026
Not All AHAs Hit Rosacea Skin the Same Way. Molecular Size Is the Variable Your Log Isn't Capturing.
The blanket 'avoid all chemical exfoliants' rule collapses under scrutiny. Mandelic acid's larger molecular structure changes the penetration math, and your flare diary is probably missing four variables that matter more than the AHA label.
Article · August 10, 2026
After the flare clears, the mark stays: why rosacea resolution looks different on darker skin
In medium and dark skin, post-inflammatory pigment can outlast a rosacea flare by weeks. Without dated photos, a single exam can't tell remission from relapse.
Article · August 7, 2026
Your neurologist sees the flushing. Your dermatologist doesn't know about the migraines.
Rosacea and migraine co-occur at elevated rates and share a nerve signal called CGRP. Two care teams, one patient, zero shared data. A combined log is the first document that shows it.
Article · August 6, 2026
Your rosacea diary is logging the wrong day
Most trigger logs assume a flare shows up the same day you slipped. No published data says it does, and a daily diary can't see a trigger from two days back.
Article · August 5, 2026
Flushing that isn't red: why photo logs are non-negotiable for rosacea on darker skin tones
On deeper skin tones flushing reads dusky purple or brown, not red, and fades without a trace. That makes a timestamped photo log diagnostically load-bearing, not optional.
Article · August 4, 2026
Central Heating Is the Rosacea Trigger Your Diary Never Logs
Central heating compresses two known rosacea triggers, heat and dry air, into the room where you spend most of your day, and a standard trigger diary never records it.
Article · August 3, 2026
Niacinamide Didn't Cause Your Flare: The Wrong-Molecule Confound in Rosacea Trigger Logs
Niacinamide and niacin share a name and a vitamin family, not a flushing pathway. When your trigger log blames one, it usually caught the other.
Article · July 31, 2026
The Decade Before Menopause Is When Rosacea Often Starts
The 'menopause resolves rosacea' story skips the hardest part: the years before, when estrogen swings and flushing often first appears. Almost no one is logging that window.
Article · July 30, 2026
Three weeks of flares, one appointment: how to make your rosacea photo log count
Rosacea has no lab test, so the diagnosis comes from your photo record. Three decisions turn a chaotic camera roll into a log a dermatologist can classify in one visit.
Article · July 29, 2026
Why Cortisone on Your Face Delays Your Rosacea Diagnosis
Steroid creams like hydrocortisone flatten facial redness fast, but they quietly corrupt the baseline a dermatologist needs to read your rosacea correctly.
Article · July 28, 2026
What to Log During the Six-Week Rosacea Trial Window
Rosacea topicals come with a built-in trial period before your dermatologist decides they worked. Almost nobody tells you what to record while it runs.
Article · July 27, 2026
The retinoid ban for rosacea patients is a category error
Told to avoid retinoids because you have rosacea? That instruction collapses four very different compounds into one bucket, and the evidence pulls them apart.
Article · July 24, 2026
Rosacea has no lab test. Your photo log is the test.
Rosacea has no confirmatory test. A dermatologist reads it from visible phenotype features, which means a timestamped photo series is the only objective record you can actually hand them.
Article · July 23, 2026
Papulopustular Rosacea or Hormonal Acne: The Log That Separates Them
They share the same cheek-and-chin pustules. Five loggable variables tell them apart, and a four-week log is what your dermatologist actually needs to call it.
Article · July 22, 2026
The wrong reference: why rosacea looks different when you're not the textbook patient
The standard advice is to compare your face against rosacea photos online. For medium and deeper skin tones, that comparison quietly sends people away from a diagnosis they may need.
Article · July 21, 2026
Men develop rhinophyma. Women get diagnosed first.
Rhinophyma, the nose-thickening rosacea outcome that needs surgery, is almost entirely a men's disease. So is the diagnosis delay that makes it worse.
Article · July 20, 2026
Starting or Stopping Birth Control Is a Rosacea Baseline Event
Any start, stop, or switch of a hormonal contraceptive resets your rosacea baseline. Log the date, or spend the next two months blaming the wrong moisturizer.
Article · July 17, 2026
Rosacea's cardiovascular overlap isn't a coincidence. It's the same vascular fire.
Rosacea and cardiovascular risk markers keep co-occurring in population cohorts because they share one inflammatory biology. That shared fire is why your worst flare weeks track illness and stress, not lunch.
Article · July 16, 2026
Your rosacea doesn't have one trigger. It has a threshold.
Why the same glass of wine flares you on Saturday but not Tuesday, and why single-trigger elimination logs give false answers about half the time.
Article · July 15, 2026
Your Rosacea Severity Needs a Number, Not a Description
Dermatologists grade rosacea 0 to 4 on the IGA scale at every visit, and that number drives coverage and treatment escalation. Most patients never learn their own.
Article · July 14, 2026
Sensitive Skin Isn't a Diagnosis. Rosacea Is.
"Sensitive skin" has no medical code and no treatment pathway. Rosacea has both. Here's why the difference can quietly cost years in the wrong aisle.
Article · July 13, 2026
The clinical vocabulary gap: why your dermatologist can't use what you wrote in your diary
You write 'really red, bad week.' Your dermatologist charts erythema grade and papule counts. The translation gap is where your best data disappears.
Article · July 10, 2026
Sleep Debt Is a Rosacea Trigger Your Log Probably Ignores
Trigger lists name heat, wine, and sun. They skip the eight hours where circulating inflammation and barrier repair actually reset your skin's flushing threshold.
Article · July 9, 2026
The Rosacea Symptom Clinical Grading Doesn't Score
Burning is the primary symptom for 94.75% of rosacea patients, yet the grading scale clinicians use to score severity has no line for it, and that gap costs you at your next appointment.
Article · July 8, 2026
Your rosacea log is a prior-authorization document
Prior authorization for rosacea topicals gets denied on thin records. A timestamped photo and trigger log is the objective evidence payers actually ask for.
Article · July 7, 2026
SPF for rosacea: why the formula matters more than the number
Two people with identical SPF 50 compliance can flare in opposite directions. The number on the bottle can't tell them apart. The vehicle chemistry can.
Article · July 6, 2026
The 72-Hour Window: What to Document Before Your Rosacea Flare Disappears
Rosacea is episodic, so the redness and bumps a dermatologist most needs to see usually fade before exam day. Here is the evidence packet to capture first.
Article · July 5, 2026
Fragrance-free isn't the same as safe: the labeling gap wrecking rosacea routines
On a US label, 'fragrance-free' only means no ingredient called 'fragrance.' Essential oils and masking agents slip through under their own names, and your flare log never sees them.
Article · July 5, 2026
The Rosacea Drug That Makes Redness Worse When It Wears Off
Topical brimonidine can leave your face redder than baseline once it wears off. That rebound flush is a timing pattern, not treatment failure, and a timestamped log tells them apart.
Article · July 5, 2026
Rosacea and Exercise: Why the Trigger Is Heat, Not Effort
Heat and heavy exercise trigger rosacea through one mechanism: thermoregulatory vasodilation. That makes ambient temperature, time of day, and exercise type tunable variables, not a binary you must avoid.
Article · July 5, 2026
Why Your Rosacea Flares at the Same Time Every Month
Premenstrual rosacea flares look like random lifestyle triggers because most diaries never log the one variable that explains them: the day of your cycle.
Article · July 5, 2026
The trigger your diary can't capture: rosacea's psychological feedback loop
Stress flares run on the same nerve pathway as a hot drink, but rosacea diaries have no field for them, so they corrupt every trigger you try to isolate.
Article · June 26, 2026
Gritty Eyes, Wrong Doctor: Ocular Rosacea's Routing Problem
Eye symptoms affect most rosacea patients and sometimes arrive first, but the specialty split means two doctors treat half the condition each, with no shared record between them.
Article · June 23, 2026
The Single Nerve Pathway Behind Every Rosacea Trigger
Heat, stress, red wine, and exercise feel like unrelated rosacea triggers. The mechanism says they all flip one nerve circuit, and that changes what is worth tracking.
Article · June 19, 2026
"What subtype of rosacea do I have?" is now the wrong question
Dermatology retired the four-subtype model in 2017. Here is why 'which subtype am I?' sends rosacea patients down the wrong path, and what to track instead.
Article · June 15, 2026
Ten Sources Tell You to Keep a Rosacea Diary. None Tell You How.
Every clinical authority recommends documenting your rosacea before treatment. None of them specify the documentation standard a dermatologist can actually read. Here is what that standard looks like.
Article · June 11, 2026
The Appointment-Timing Gap: Why Rosacea Is Hard to Diagnose in 15 Minutes
Rosacea's signs appear and resolve, so a visit booked weeks after a flare often captures a calm face. The record you bring matters more than the exam.
Article · June 8, 2026
How to Find Your Own Rosacea Triggers: The n=1 Method
Trigger lists describe crowds, not faces. The only study that can find your rosacea triggers is the one you run on yourself.
Article · June 4, 2026
Rosacea and the Gut: What the Microbiome Data Actually Shows (and What's Still Speculation)
Meta-analysis ties rosacea to gut disturbances like SIBO. That is a replicated signal, not the probiotic-cure story circulating on Reddit. Here is where the evidence actually stops.
Article · May 28, 2026
The 16-million-person rosacea-tracking category that doesn't exist.
Roughly 16 million Americans have rosacea. The category for tools that help them track it is one of the largest underbuilt niches in consumer health software. The published critiques converge on a small set of structural failures: phenotype-incorrect onboarding, collapsed severity scoring, ignored ocular phenotype, no skin-tone-equity work, and photo pipelines that fail serial comparability. This is the category-level argument for why a new entrant is worth building.
Article · May 28, 2026
The post-COVID rosacea wave: what 2002 surveys can't tell you.
The canonical NRS 2002 trigger list is a great patient-survey dataset and it is also missing the largest single new rosacea-trigger event of the last decade. A 34 percent post-COVID exacerbation rate in one retrospective study and a 28.8 percent post-infection rate in a 2025 cross-sectional study describe a trigger pattern the 2002 framing has no field for.
Article · May 28, 2026
Why every dermatology app fails at clinical photography.
Auto white balance is explicitly discouraged in serial clinical photography. Flash creates specular hotspots that destroy erythema scoring. Standardized lighting, manual white-balance lock, fixed distance, dark blue background for skin of color: these are not opinions. They are the published protocol. Almost no consumer dermatology app implements any of them. The result is a photo set you cannot serially compare.
Article · May 28, 2026
Demodex: the rosacea factor most patients have never heard of.
Rosacea patients have roughly 8 times the Demodex mite density of healthy controls. Topical ivermectin, which kills the mites, reduces rosacea lesions in randomized trials. The mites are there, the treatment that targets them works, and the causal story is still being worked out. We are going to explain what the literature actually says and what it doesn't, in plain language, without recommending you do anything beyond bring this up with your dermatologist.
Article · May 28, 2026
The estrogen-protective hypothesis: why menopause sometimes resolves rosacea.
Postmenopausal patients sometimes report their rosacea getting better, not worse, when the literature might predict the opposite. The Nurses' Health Study II analysis on exogenous hormones found that menopausal hormone therapy and oral contraceptives are dose-responsively associated with increased incident rosacea risk. Both findings line up with an estrogen-modulated mechanism dermatology has been quietly working out for years.
Article · May 28, 2026
Red wine ≠ white wine, a 20-year trigger taxonomy story.
Two separate strands of rosacea-and-alcohol research disagree at first glance, then reconcile in a way that matters at a wedding dinner. The NRS 2010 acute-flushing survey put red wine far ahead of white as a trigger. The Li 2017 NHS cohort found white wine and liquor associated with incident rosacea risk and red wine, not statistically associated. The disagreement is real, and the two findings are about different things.
Article · May 28, 2026
It's the temperature, not the caffeine.
Most rosacea patients learn from forum lore that they have to give up coffee. The published evidence is the opposite. A case-control study found that 60°C water and 60°C coffee produced equivalent flushing, and both at 22°C did not. A 82,737-woman cohort showed caffeine intake is inversely associated with incident rosacea risk. The trigger is the heat, not the chemistry.
Article · May 28, 2026
What dermatologists actually want from your tracking app, and what they hate.
The published preferences are clear and the consumer-app category has mostly ignored them. Dermatologists want a single-page summary with the flare count, the top trigger co-occurrences, two photos, and the quality-of-life trend. They explicitly do not want 90 daily photos, a dashboard URL, or a pseudo-diagnostic score the patient pulled off an app. The 12-minute visit makes this concrete.
Article · May 28, 2026
Why your rosacea app should be tracking your eyes.
Ocular involvement affects 50 to 72 percent of cutaneous rosacea patients, and in a meaningful subset it shows up before the facial component does. The 2017 phenotype framework lists ocular manifestations as a major phenotype, on its own line, with diagnostic weight. Most rosacea trackers don't have a field for it.
Article · May 28, 2026
Why every rosacea severity score feels broken.
Patients complain that their tracker's single severity number doesn't reflect what their face is actually doing. It turns out that complaint matches a published critique of the Investigator Global Assessment scale that dermatology has been working with for years. The collapse-into-one-number problem is structural, not a UX bug.
Article · May 28, 2026
Rosacea on every skin tone, the underdiagnosis problem nobody's solving.
Reported rosacea prevalence in Fitzpatrick IV-V skin sits at roughly 6 to 8 percent of the rosacea-diagnosed population. The literature is explicit that a meaningful share of that gap is diagnostic masking, not biology. Telangiectasia is harder to see against pigmented skin, and the dermatology image-classification models trained to spot it perform 3 times worse on darker skin than on lighter. We built Skinframe to not make that mistake worse.
Article · May 28, 2026
Rosacea apps haven't gotten the 2017 update.
In 2017, the dermatology field formally retired the four-subtype rosacea model and replaced it with a phenotype framework. Nine years later, every rosacea-named tracker on the App Store still opens with "which type of rosacea do you have?" That question has a name in the literature, and the literature has moved on.