Trigeminal trophic syndrome is an uncommon clinical entity in which cutaneo
us trophic ulceration develops with continuous manipulation of trigeminal d
ermatomes. Patients spontaneously refer picking, rubbing and/or scratching
at the affected areas because of hypo-anaesthesia, paraesthesia and/or pain
following damage of the sensory trigeminal fibres or nuclei. We herein des
cribe a patient who developed the syndrome as a sequela of brain stem infar
ction. Diagnosis by scrape cytology in ruling-out basal cell carcinoma and
other ulcerative skin diseases is discussed and the importance of neurologi
cal examination in disclosing hemi-anaesthesia of trigeminal dermatome(s) i
s emphasized.