My neuro diagnosed me with CH with a rare variety where I also get a migraine. This was when I initially had them 4 years ago.
I have never had a migraine other than during the attacks, but most of the time the migraine lasts for hours after the CH ends.
The CH have definitely changed. At first they lasted about 2-3 hours at 2pm and sometimes also 2am daily. Now they only last around 15-30mins, but I get between 1-4 attacks daily, usually at either 2am, 4am, 6am, 8am, but occasionally at other times such as 9pm.
I tried busting with Psilocybe semilanceata on Monday and I didn't get any CH until 10am the next morning, and it was a horrendous slapback 10/10 pain, and lasted over an hour.
I should be receiving DMT tomorrow to help abort the attacks.
I'm also going to try and bust again on Sunday with 1g cubensis.
Currently what works best for me is to do the Wim Hof method as soon as I feel an attack coming on, and then put an ice pack on my head. Sometimes it works, sometimes it doesn't, but the breathing definitely reduces the pain and length.
The amount I overheat is starting to concern me as I sometimes jump straight into a freezing cold shower and still feel like I'm burning up. Unfortunately I can't afford to speak to a neuro and would have to wait many months if I go via the NHS.