If the attacks of Migraine are more than twice a month, usually Medicines to prevent (PROPHYLAXIS) Migraine are prescribed. Under supervision of a Neuro Specialist after all other causes have been ruled out. Headaches are due to Stress, eye strain, sinus blockage or even Migraine. Very rarely it could be due to something significant like a stroke or tumor. Keep a headache diary. Jot the details of your headache. Its frequency, what brings the headache - hunger, stress, lack of sleep, certain foods, TV,etc. These are triggers. You should try and avoid all the triggers consciously. You need to consult a Neuro Specialist and possibly an MRI of brain before starting the PROPHYLAXIS.