I am 42 years old male suffering for severe headache in the right side, just above the eyes. The pain starts 3-4 hours after meals. Especially, during night, around 2 pm, the intense pain makes me wake up from the sleep and I feel like going to pass my bowels. After passing of bowels, the pain subsides. Again around same kind of pain starts and again after passing bowels, the pain subsides. This has been happening to me for the last more than 10 years and particularly during change of season. It lasts for 7 to 15 days. Rest of the year I am ok. Kindly advise.