I am having this severe headache for the past 5 days and adding to it I get a runny nose and itchy eyes. I get headaches in the pattern. It lasts for some time, but I get it again after hours. The get it in the morning when I wake up and it's gone in half an hour. I get it in the evening around 6 and the night at 10. Want to know what is this headache and how can it be treated because the pain is unbearable.