While I am not familiar with the procedures in Ireland, the concept of working while in cycle, or as in your case and mine, while chronic, is not new to us. For me, it is impossible to work while actually having a cluster. Not too long ago, for about 3 years, I was getting hit 6 times a day and twice at night. I had to work in between hits and have a backup plan for when I was hit at work. It took unusual levels of understanding and preparedness to just make it through the day or night. My goal was to get the beast under control enough so I could keep more regular hours. That took a new neuro who was a headache specialist, the insights from this website, great support here and at home, and a willingness to try whatever might work. I wish you the best of luck and the highest level of success. God bless. lance