I know this for a fact because I wrote about my very first ambulance ride in my journal back in September 2006, during which I was experiencing the exact same symptoms
that led to my diagnosis. Since then I have gone to the ER on several occasions to get a shot of Dilautid or whatever for the pain. The frequency of attacks, up until recently, has been once every 2 - 4 months. In this past month alone, I have had THREE attacks, so it appears they are increasing in frequency.