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: Pathology
Which of the following causes of orofacial pain is not associated with vascular origin: 
Select and explain. 
A. Cluster headache, B. Giant cell Arteritis, C. Anesthesia dolorosa, D. Chronic paroxysmal hemicraria
C: Anesthesia dolorosa
Answer: C: Anesthesia dolorosa 
Explanation: None