Rashes by Cause
The same-looking rash can have very different causes. These guides cover the common ones — how to tell them apart, and when a rash needs a doctor. Or check a photo of yours with Rash Detector.
- Diabetes and Skin RashesLearn how diabetes affects skin, common diabetes-related rashes, what causes them, and when to consult a doctor. Includes actionable tips and AI skin check info
- Necrobiosis LipoidicaLearn how to recognize necrobiosis lipoidica, its causes, and when medical attention is needed. Get clear, evidence-based info and guidance on next steps.
- Heat Rash (Prickly Heat)Learn what heat rash (prickly heat) looks like, why it happens, and when to see a doctor. Get clear, practical advice and check your rash with Rash Detector.
- Sweat Rash & ChafingLearn what sweat rash and chafing look like, why they occur, and when to seek medical advice. Get clear, actionable tips for relief and prevention.
- Contact DermatitisLearn what contact dermatitis looks like, common causes, and when to see a doctor. Get tips for identifying triggers and managing symptoms.
- Fungal Rashes (Ringworm, Jock Itch, Candida)Learn what fungal rashes like ringworm, jock itch, and candida look like, why they occur, and when to see a doctor. Get clear, actionable guidance.
- Stress Rash & HivesLearn how stress can cause rashes and hives, what they look like, why they happen, and when you should see a doctor. Get fast, private rash checks with Rash Det
- Drug & Medication RashLearn what a drug or medication rash looks like, why it happens, and when to seek medical advice. Get clear, fact-based guidance and check your rash with Rash D
- Autoimmune Rashes (Lupus, Psoriasis, Eczema)Learn how autoimmune rashes from lupus, psoriasis, and eczema look, why they occur, and when you should see a doctor. Check your rash with Rash Detector.
- Shingles & Viral Rashes in AdultsLearn how to recognize shingles and other viral rashes in adults, why they appear, and when to seek medical care. See what to watch for and how to check your ra
Upload a photo and Rash Detector's AI suggests likely causes to discuss with your doctor — free, private, and informational (not a diagnosis).
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