Clear, source-linked guides to common rashes, bumps and skin changes—what they look like, what can mimic them, sensible self-care and when to seek professional help.
Start with the guide closest to the pattern or trigger you noticed. Use it to understand possibilities and warning signs—not to confirm a diagnosis. If you cannot describe the change, use the photo scanner first and follow its urgency guidance.
Call emergency services for breathing difficulty, facial or tongue swelling, collapse, a severe widespread blistering rash, or a non-blanching purple rash with serious illness. Arrange prompt care for rapidly spreading pain and warmth, pus, fever, eye involvement, a changing mole, a non-healing sore or any concern that conflicts with how unwell you feel.
Medical images and AI can organize possibilities, but neither can replace touch, dermoscopy, testing or biopsy. Persistent, changing or uncertain concerns deserve an examination.
No. Guides help you recognize patterns and urgency, but many conditions overlap. A healthcare professional may need to examine the skin or perform testing.
Start with ringworm and nummular eczema because they commonly resemble one another. Persistent lesions may need a fungal scraping.
Breathing symptoms, facial swelling, widespread blistering, a non-blanching rash with illness, rapidly spreading painful redness and eye involvement need urgent assessment.
No. It can provide educational urgency guidance, but changing moles and non-healing lesions require a dermatologist and sometimes biopsy.
Each condition page links directly to established sources such as CDC, NHS, MedlinePlus, the National Cancer Institute and the American Academy of Dermatology.
Upload a clear photo and get an educational shortlist with red-flag guidance.
Scan a skin concernEducational guidance only — not a medical diagnosis.