This study aims to evaluate the results of percutaneous radiofrequency rhizotomy and the effectiveness of microvascular decompression for the treatment of trigeminal neuralgia and Comparing between them according the different outcome parameters.

This is prospective case -series hospital based study, will be conducted on 40 patients with trigeminal neuralgia treated either by percutaneous radiofrequency trigeminal rhizotomy or microvascular decompression at Sohag University Hospitals, between march 2021 and June 2022 and we will divide the the patients into two groups ,one group will be treated with percutaneous radiofrequency trigeminal rhizotomy and the other group will be treated with microvascular decompression and we will asses the results with the Barrow Neurological Institute Pain Intensity Score .

Inclusion Criteria:

• Failed medical treatment more than 6 months

Exclusion Criteria:

• Coagulation disorder or hemorrhagic disease;
• Mental illness and inability to cooperate;