<p>A 34 year old lady presented with a lesion on the right temple that had been present for several years unchanged. Recently the lesion became red, raised and crusty, after which it started to settle down. What is the most likely diagnosis? </p>
Dermoscopy - Introduction, Terminology and Structures
A document to help you understand the dermoscopic descriptions used in this blog.
Dermoscopy Algorithm
To help you work through dermoscopic cases.
<p>Dermoscopically, if you look carefully, there are many grey or grey-brown dots. As you can see from the algorithm, grey structures on the face are usually a cause for concern, but this lesion is the exception. The lesion itself, as well as the morphology and distribution of the grey dots, take on a very symmetrical appearance, and along with the history, the diagnosis is in keeping with a harmless lichenoid keratosis. </p>
<p>Lichenoid keratoses appear to result from the inflammatory destruction of a pre-existing epidermal lesion such as a solar lentigo or seborrhoeic keratosis. For more information please refer to the PCDS chapter on <a href="http://www.pcds.org.uk/clinical-guidance/lichenoid-keratosis">lichenoid keratoses</a>.</p>
