A 53-year-old Irish female presented with an intractable trigeminal neuralgia pain in the region of her left maxillary nerve (V2) who did not respond to pharmacotherapy including pregabalin 300mgs bd and gabapentin 300mgs bd. She had been admitted to hospital for one month for intravenous oxycodone hydrochloride. She had also more than fifty nerve blocks in the previous years and had undergone stereotactic gamma knife radiosurgery which had work for five months but later resulted in uncontrollable dysesthesia pain in the region of her left maxillary nerve. She defined this as a continual unpleasant sensation of something 'crawling' under her skin in her left periorbital. There was a sensation of intense pain in her left external nasal area and that of electric shock, burning, and pins and needles and left mental area.