Suggest Treatment For Chronic Migraine

Hi I m Rajeev, my uncle is addmitted in Darjeeling hospital suffering from severe headach. He is actually Migrain patience, for almost 10 years he is bearring his pain. He takes 10 to 12 medicine per day I know which is not safe. I suggested several time to consult a good doctor but he has been Ignoring. This time situiation is diffrent, so, I am planning to take responsible for entire treatment. Request you to kindly suggest. Thanks, Rajeev Pradhan, Darjeeling