1. Trigeminal Trophic Syndrome
Charles H. Dicken, MD 
Mayo Clinic Proceedings 
Volume 72, Issue 6, Pages (June 1997)
DOI: /
Copyright © 1997 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1 (case 1)
Crescentic or y-shaped ala nasi tissue loss and some loss of upper lip tissue.
Mayo Clinic Proceedings  , DOI: ( / )
Copyright © 1997 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Fig. 2 (case 6)
Extensive loss of ala nasi, with typical crescentic defect. Extension of tissue loss onto upper lip draws lip into characteristic sneer.
Mayo Clinic Proceedings  , DOI: ( / )
Copyright © 1997 Mayo Foundation for Medical Education and Research Terms and Conditions

4. Fig. 3 (case 3)
Neurotrophic ulcers on forehead, cheek, and upper lip, with sparing of ala nasi area.
Mayo Clinic Proceedings  , DOI: ( / )
Copyright © 1997 Mayo Foundation for Medical Education and Research Terms and Conditions