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The DermDiag Tool is designed to help you understand your skin condition. This tool does not provide medical advice. To get started, select the part of the body where you are experiencing symptoms. We suggest that you search our Glossary if you are unfamiliar with any dermatological terms.
We’ll show you a non-exclusive selection of some common skin conditions with the characteristics you have chosen: a dark blue box indicates a diagnosis is COMMON, light blue indicates it's UNCOMMON, and grey indicates a diagnosis is RARE.
Click on IMAGE box for examples of the condition.
To find out more about the condition, click on the BLUE box.
To review the clinical features selected, click on the GREY boxes above the algorithm
or click here to return to the previous option or click here to use the DermDiag tool again.
Differential Diagnosis
in Dermatology
The DermDiag tool is based on the best-selling book for Doctors, Differential Diagnosis in Dermatology. This tool does not provide medical advice. It is intended for informational purposes only. If you have any medical problems, see your doctor or a dermatologist. © DermNet New Zealand © Dr Richard Ashton.
Buy Differential Diagnosis in Dermatology on Amazon.
© 2021 DermNet New Zealand Trust.
DermNet NZ does not provide an online consultation service. If you have any concerns with your skin or its treatment, see a dermatologist for advice.