Stop guessing what that rash is. Upload a photo and RashScan's AI compares it against thousands of dermatologist-verified cases to identify the most likely condition — free, private, no account needed.
Describing a rash in a search box is nearly impossible — "red bumpy itchy patch" matches dozens of very different conditions. A picture carries far more information than words, and that's exactly what RashScan's rash identifier uses.
When you upload a rash picture, the AI examines its visual signature — color, texture, border shape, distribution pattern and scale — and compares it against thousands of verified dermatology images spanning more than 50 common skin conditions. You add a few quick details (when it appeared, whether it itches, whether it's spreading), and within about a minute you get a structured report:
Have a rash you're wondering about right now? Upload a picture and see what the AI finds.
Scan my rashThe model recognizes the conditions that account for the vast majority of everyday rash worries, including:
For unusual or ambiguous presentations, the identifier is honest about uncertainty: it shows lower confidence scores and tells you plainly when an in-person exam is the right next step.
Searching "red itchy rash on arm" returns pages written for everyone, which means they help no one in particular. An image-based identifier starts from your rash — its actual appearance — and works backwards to the conditions that genuinely look like it. That's the same first step a dermatologist takes when you walk in: look first, ask questions second. RashScan simply makes that first look available at 2 a.m., free, without a waiting room.
It's important to be clear about what this is: an educational assessment, not a medical diagnosis. Confirming any skin condition requires a qualified clinician. What the identifier gives you is a well-grounded starting point — so you know whether you're likely dealing with something self-care can handle, or something worth booking an appointment for.
A confidence score is not the probability that you have a condition. It tells you how strongly the visible pattern and symptoms match examples in the model's reference data. A high score means the image has a characteristic pattern; it does not replace an examination or test. When the top two possibilities have similar scores, focus on the report's distinguishing clues and arrange professional review if the treatments would differ.
Note the date, body location, recent products or medications, illness, travel, outdoor exposure and whether anyone close to you has similar symptoms. Take follow-up photos in the same light and at the same distance. A changing border, rapid spread, new pain, drainage or fever matters more than a small change in color caused by lighting.
Ringworm can be confused with coin-shaped eczema; hives can resemble insect bites; folliculitis can look like acne; and contact dermatitis can mimic almost any itchy red eruption. Avoid starting several treatments at once because improvement or irritation then becomes difficult to interpret. Use the result as a shortlist, follow low-risk care, and reassess on the timeline in the report.
We use established public-health and dermatology references and link them directly so you can verify the guidance and read further.
RashScan ranks the visually closest matches from thousands of dermatologist-verified cases and shows you a confidence score for each, so you always know how certain the AI is. Clear, well-lit photos produce the strongest results. It is an educational tool — a strong first assessment, not a formal diagnosis.
Yes. Uploading a rash picture and getting a full AI report — condition, severity, treatment plan and healing timeline — costs nothing, and no account or credit card is required.
You can scan a photo of a child's rash the same way. Children's rashes (heat rash, hand-foot-and-mouth, eczema) are among the most common scans. Be extra cautious though: infants with fever plus a rash should always be seen by a doctor promptly.
Your photo is processed over an encrypted connection and tied only to an anonymous device ID — we never ask for your name or email. You can delete your scan history at any time from inside the app.
If the rash is spreading rapidly, blistering severely, accompanied by fever or difficulty breathing, involves the eyes or mouth, or shows signs of infection like pus and red streaks — seek medical care immediately rather than scanning first.
Upload a picture and get the likely answer in about 60 seconds — free and private.
Identify my rash — freeEducational guidance only — not a medical diagnosis.