Benadryl helped me a lot. Totally cured me after a month or two. I started off by taking two at a time and worked my way up to 4. It kept all symptoms in check, and then one day it just went away. I haven’t taken any Benadryl in over 17 months.
Now my case may be different because it had come and gone in the past – and please consult an allergist (or other doctor) before taking 4 Benadryl, as I don’t know its effects on you and don’t want you to do anything dangerous.
But I was in fairly constant pain (like 20-30 episodes a day), and it totally cured me. You can ping me at firstname.lastname@example.org if you want to speak privately.