DermEdge

What seems to affect your skin

Severity, flare risk and treatments over time

Tap what you just used. It shows on your history chart and in the doctor report.

Doctor report

Your dermatologist sees your skin for a few minutes every few weeks. This report shows them the weeks in between.

A printable summary of every check: photos, heatmaps, severity and flare risk. Use your browser's Print → Save as PDF.

Does it work across skin tones?

Stage 1 (normal vs rash) on held-out real smartphone photos, by Fitzpatrick skin type. Our first screen missed a third of rashes on Fitzpatrick V–VI. After we added South Asian clinic photos to its training it catches rashes on darker skin as often as on lighter skin at one shared threshold, so the calibrated columns now match. Few healthy V–VI photos exist to test with, so the cleared figure for V–VI is rough.

Built to support your dermatologist, not replace them

A dermatologist sees your skin for a few minutes every few weeks. Eczema flares build over days in between. DermEdge records those days, so your doctor sees the trend, not a snapshot.

How accurate is this?

What we measured, and what we haven't yet. DermEdge is a screening aid: a dermatologist makes the diagnosis.

• The rash screen misses about 1 in 8 rashes, and flags about 1 in 5 healthy photos. On 1,849 real phone photos (SCIN), tested on people it never saw in training, it caught 88% of rashes and cleared 82% of healthy skin. On 1,710 photos from two hospitals in Bangladesh (SkinDisNet) it now catches 84% of rashes, up from 33%.
• Telling eczema from look-alikes is the hardest part: right about 2 times in 3 on US phone photos, 4 in 5 on South Asian clinic photos. Caught 66% of eczema and cleared 63% of look-alikes on SCIN, and 78% and 81% on SkinDisNet. Our first model scored 81% on atlas photos but was at chance on real phone photos, so we replaced it.
• Severity tends to rate mild eczema as moderate. Off by 1.2 points on average on the 0–12 scale, and within one band 98% of the time.
• Darker skin is screened as well as lighter skin. On Fitzpatrick V–VI the screen catches 86% of rashes, the same as on lighter skin. It was 67% before we added South Asian clinic photos to its training. Only 16 healthy V–VI photos were available to test, so that figure is rough.
• Flare risk is a designed score, not yet clinically validated. It multiplies the photo result by your triggers. Checking it against real flares needs a study over time.
• Band stress comes from skin conductance only, and misses some stress. Tested on 15 people (WESAD), each scored by a model trained on the other 14: right 90% of the time, caught 73% of stressful periods, and worked poorly for 4 of the 15. It compares you with your first 90 seconds of each recording.
• Scratch detection has been tested on one wearer so far. It found every scratch clip in a held-out round with no false episodes, but a model from one person's recordings isn't validated.
• The simulated days in the Wearable tab are simulations. They show how triggers feed the flare risk, using generated signals, not anyone's real readings.

Privacy

Updated 7 November 2026. DermEdge has no accounts and no ads. It counts anonymous page views (below).

• Your health data stays on this device. Photos, results, treatments, journal, skin type and band recordings are kept in this browser's own storage. They are never uploaded.
• The camera runs only when you ask. It turns on when you start it, and its frames are analysed on this device.
• The band connects only after you pair it. Encrypted Bluetooth, unlocked with the 6-digit code on the band's screen. Readings go from the band to this browser and nowhere else.
• What does use the internet. Vercel hosts this site and the AI engine (ONNX Runtime) loads from the jsDelivr CDN. Like any website, they see your IP address and browser when you visit. The AI models download from this site once and are kept for offline use. None of these requests carry your photos or health data.
• Anonymous visit counts. Vercel Web Analytics counts page views: page path, referrer, country and device type, with no cookies and nothing that identifies you. Query strings and in-page links are stripped before sending, and it never sees your photos, results or band readings.
• Data leaves only if you share it. The doctor report and recording CSVs are made on this device, and go wherever you print, save or send them.
• You're in control. Delete everything below at any time; clearing this site's data in your browser does the same. The cached models stay, as they hold nothing about you.
• This is a prototype. DermEdge is a hackathon prototype, not a medical device. A public release would need a full privacy policy under India's Digital Personal Data Protection Act 2023, with a named grievance contact. Questions: GitHub issues.

Your data

Your photos, results, treatments, journal and settings are stored in this browser only. None of it is uploaded.