Ulcération neurotrophique après thermocoagulation du ganglion de Gasser

The physiopathology of NTUs is badly documented. The cutaneous ulcerations look like facial neoplasms but the clinical findings (unilateral and paranasal location ; lesion of the trigeminal nerve ; local trauma ; psychological instability) suggest neurotrophic ulceration. The histopathological examination, sometimes difficult, reveals non-specific chronic inflammatory ulceration. There is no consensus on treatment. The psychological profile may be a risk factor for recurrences and must be taken into account.