On the facebook page: out of the 50k photo views and 800+ forum topic visits, here are a few comments (50+) that I found interesting:
-"I think its not spot diagnosis. One can make a list of differential diagnosis. Standard medical approach is then needed to reach to the final diagnosis...
...1. My differential would be cutaneous leishmaniasis , BCC, tuberculosis verruca cutis". And need a biopsy an H/o of disease...
-leishmaniasis was mentioned 27 times
-tuberculosis verruca cutis was mentioned 17 times
For the full list of answers:
https://www.facebook.com/dermatologynews (Title: "Clinical Case from the online Dermatologica Helvetica discussion forum")