Cluster Headaches affect less than 0.01% of the worlds population. There is Chronic like me and Episodic.I have been chronic for over 7+ years.
The disease is life altering, and been clinically noted as 'The Worlds Most Pain full Disease On the Planet Known to Medical Science" quoted by Dr.Peter Goadsby.
The attacks range from 30 min to 3 hours long every attack. The intensity is different for each attack. I get anywhere from 1 to 15 per day everyday.
I have had 4 brain surgeries thus far.