I also discovered the dive / ice water reflex sometimes helped my migraine. The reason I tested it is because caffeine supposedly releases some chemicals related to the same chemicals that are released when you vomit. Since my migraines always ceased after vomiting, I used these other methods to induce the same chemical response in the brain.
I now keep Excedrin migraine on hand (has caffeine). However, my migraines completely ceased after I stopped using nasal steroid spray and started with an allergy nasal spray.
I now keep Excedrin migraine on hand (has caffeine). However, my migraines completely ceased after I stopped using nasal steroid spray and started with an allergy nasal spray.