This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
All of the following skin changes are associated with Diabetes Mellitus except 
Select and explain. 
A. Acanthosis Nigricans, B. Granuloma annulare, C. Necrobiosis lipiodica, D. Salmon patch
D: Salmon patch
Answer: D: Salmon patch 
Explanation: Salmon patch is associated with "Sturge - Weber" syndrome.