Neuropathic ul cer in the facial region, especially in the nostril or in a dermatome of the trigeminal nerve (after irritation of the trigeminal nerve, e.g., after surgery, anesthesia, infection/osteroid infection, or trauma).
Most commonly, facial neuropathic ulcers occur on the nostril, not uncommonly in association with treatment of trigeminal neuralgia by destruction of the Gasserian ganglion (see also Nasal trophoneurotic ulcer).
See also Cervical trophic syndrome.