I have a chronic head ache problem. It happening from last 5-6 yrs. Happens generally after 2-3 hrs of bath or when I walk around under the sun for 10-15 mins and come back home, and its also happens when I drink something cold or stay in ac rooms for 10-15 mins. I had done few test also as per the doctors whom I consulted here. 1) pns sinus 2) ct of scan of brain But as per them nothing found there. I last consulted with an ent specialist about 6-months back he told me that it's one kind of migraine which occurs due to stress. And given me a medicine after dinner. I felt good after taking that for 3 months and then he told me to stop the medicine and check whether the problem of head pain come again or not. Few days its didn't happened. But from last 2 months same thing happening again. Please help me so that I can get rid of this sever pain. It's start from right or left and gradually cover whole head. Some times stays for few mins. And sometimes stays for long. I took ceridon or sinarest for relief from this pain. Please help me.