| DermDiag | By Dermnet NZ |
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Features
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| Country of origin | New Zealand |
| Clinical review |
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| Security and privacy | Does the app:
Read more about safety and security when using apps. Brochures: |
| Cost | Free |
| Advertisements | This online tool contains no ads. |
| How to access the tool |
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DermDiag
DermDiag
- An online tool that can help you identify possible causes of your skin condition.
- It's intended for information purposes and doesn't provide medical advice.
DermDiag is an online tool developed by DermNet to help you understand your skin condition. It's intended for educational purposes and doesn't provide medical advice.
By answering a series of questions, and with images to help you along, you're shown a selection of common skin conditions with the characteristics you've chosen. Although the tool doesn't provide clinical guidance, it gives you information that helps you to talk to your doctor and learn more about your skin condition.
For the complete description, go to the website(external link) or, for a more detailed review, see reviews below. 
| PROS | CONS |
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✔ Based on the textbook Differential Diagnosis in Dermatology by Barbara Leppard and Richard Ashton. ✔ Questions are easy to answer, and it only takes a few minutes to complete. |
✘ Some people may find some of the language challenging, but a glossary is provided. ✘ The glossary contains language that some people may find difficult to understand. |
Clinical review
Reviewer: Emma Riddell, Clinical Pharmacist, Health New Zealand | Te Whatu Ora
Date of review: April 2025
Platform: Web browser
Comments: This tool is a very useful way to help identify possible causes of your skin condition. It can be used by health professionals as well the general public. The tool asks a few questions about the affected skin, such as the area affected and the appearance of the affected skin. It only takes a few minutes to complete, and then the tool gives you possible diagnoses. You can click on a potential diagnosis to be directed to the relevant page on the DermNet website, where you can read more about the condition.
The questions are easy to answer (eg, “Is the skin lesion RED?”), and often include photo examples to help you choose the best answer. However, when you're given a list of possible conditions, these could be difficult for non-health trained users to understand as the language is often targeted at health professionals. I also found that the glossary often contained language that may be difficult to understand.
Overall, I found this to be a very high quality tool and would advise using this in conjunction with advice from a healthcare professional (eg, GP or pharmacist) to help with diagnosis and treatment of skin conditions.
Safety concerns: None – there are appropriate warnings.
New Zealand relevance: Relevant to New Zealanders. Developed by DermNet NZ.
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Disclaimer: The NZ Health App Library is a free consumer service to help you decide whether a health app would be suitable for you. Our review process is independent. We have no relationship with the app developers or companies and no responsibility for the service they provide. This means that if you have an issue with one of the apps we have reviewed, you will need to contact the app developer or company directly. |
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Credits: Healthify editorial team. Healthify is brought to you by Health Navigator Charitable Trust.
