VisualDx vs DermNet NZ (2025): AI Diagnostics vs The Trusted Atlas
At a Glance
Who is it for?
VisualDx:Non-Dermatologists / ER
DermNet NZ:All Clinicians / Patients
Why choose VisualDx?
- Builds a differential diagnosis based on patient signs
- Shows variations of skin disease on different skin tones
- Interactive 'Symptom Matcher'
Why choose DermNet NZ?
- Completely Free
- The definitive library of high-quality photos
- Excellent patient information leaflets
Feature Comparison
| Capability | VisualDx | DermNet NZ |
|---|---|---|
| Pricing | Paid Subscription (Institutional) | Free (Open Access) |
| Technology | Algorithmic / AI Assisted | Static Web Database |
| Primary Strength | Diagnostic Reasoning | Visual Verification |
| Diversity | Dedicated 'Skin of Color' focus | Improving, but historically white-centric |
In-Depth Analysis
Overview
VisualDx is a diagnostic engine. It helps you when you don't know what the rash is. You enter the location, morphology (e.g., blister vs. plaque), and patient demographics, and it generates a "visual differential," showing you images of possible diagnoses side-by-side.
DermNet NZ is a reference library. It helps you when you think you know what it is but want to confirm. It is the gold standard for high-quality clinical photography.
Key Differences
If you are an Emergency Physician or GP faced with a mystery rash, VisualDx guides your thinking. If you are confirming a diagnosis of Eczema or showing a patient what Psoriasis looks like, DermNet is the go-to free resource.
Looking for a faster way?
While VisualDx and DermNet NZ are powerful tools, iatroX offers a free, AI-driven alternative focused specifically on rapid UK guideline retrieval and exam prep.
Use-Cases
Undifferentiated Rash
When to choose VisualDx
- Input 'purpuric rash on legs + fever' -> VisualDx suggests Meningococcemia vs Vasculitis.
When to choose DermNet NZ
- You must already have a guess (e.g., search for 'Vasculitis') to see if images match.
Patient Education
When to choose VisualDx
- N/A
When to choose DermNet NZ
- Print the DermNet page for the patient; it's written in plain English.