IRCT20161103030680N7 IRCT 2018-01-28 Shahed University Efficacy of Pregabaline on Trigeminal Neuralgia Compare of The efficacy of Pregabaline and Carbamazepine on patients with Trigeminal Neuralgia 2015-12-22 anticipated 20 Complete https://irct.ir/trial/24302 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Crossover, Purpose: Treatment, Randomization description: All selected samples are given one number and then are assigned in two groups alternatively by use of random number chart. group one take Pregabaline for thirty days and group two take Carbamazepine for the same period. After five days interval without any drug patients in group one take Carbamazepine and patients in group two take Pregabaline for the same period. Selection of group for the first patient is by lottery, Blinding description: All drugs are inserted in uniform packages and mark by specific code . Drugs are given to patients in the way that,participitants ,main researchers and assessors of signs and symptoms from all groups such as physicians or students are not aware of patient 's group and the kind of drugs. Study design and steps are explained for all patients but they are not aware of their group and drug kind which started for them. 1-2 Trigeminal Neuralgia. Intervention 1: First group: Ten patients who assigned randomly in this group take Pregabaline seventy-five milligrams two times daily for thirty days. After five days interval without any drug these patients take Carbamazepine two hundred milligrams every twelve hours for thirty days. Intervention 2: First group: Ten patients who assigned randomly in this group take Carbamazepine two hundred milligrams two times daily for thirty days. After five days interval without any drug these patients take Pregabaline seventy five milligrams two times daily for thirty days. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is I am not sure about benefits and patients rights from ethical aspect