  Dermtrainer is a medical decision support system that assists general
practitioners in diagnosing skin diseases and serves as a training platform for
dermatologists. Its key components are a comprehensive dermatological knowledge
base, a clinical algorithm for diagnosing skin diseases, a reasoning component
for deducing the most likely differential diagnoses for a patient, and a
library of high-quality images. This report describes the technical components
of the system, in particular the ranking algorithm for retrieving appropriate
diseases as diagnoses.
