The purpose of this study was to review the results of the neurolytic trigeminal nerve block in 41 patients from April 1992 to March 1994. Most common site of trigeminal neuralgia was the second division(27 patients, 68.3%). Nineteen patients of these were treated with infraorbital nerve block. Another 4 patients had cerebello-pontine angle tumor close to TREZ in MRI findings therefore they were excluded from this study. Thirty nine patients (95.1%) remained free of pain. Only 2 patients treated with infraorbital nerve block experienced recurring pain. Although the follow-up period was short, alcohol blocks proved effective and safe for treatment of trigeminal neuralgia.