Hi.. Thanks for the query.. Trigeminal neuralgia causes debilitating pain on any one side of face and can be caused due to a number of causes like large artery impinging over the nerve causing damage of the Myelin Sheath [ a protective cover over the nerve] leading to severe electric shock like pain.. Other causes are disorders like Multiple sclerosis, tumour compressing the nerve, physical trauma etc.. Anti-epileptic drugs like Carbamazipine and other drugs are helpful in reducing pain to some extent.. Cannabis or Cannabinoids are seen to help in reducing pain related to trigeminal neuralgia and you need to consult a Neurophysician and get evaluated and appropriate treatment can be done.. Surgical procedures like microvascular decompression, balloon compression, gama knife radiosurgery etc can be options depending on the cause.. Hope this helps.. Regards..