Lit hallway symptoms and conditions

I had an agonizing migraine this Saturday, with all the usual delightful symptoms: pain, violent vomiting,... Went to the ER. After many hours I was hooked up to an IV with Tegretol (an anti-seizure med that's effective with migraine) and Reglan (for the nausea). Within a couple of minutes after the IV drip started I realized something was wrong. My migraine pain was actually increasing. I felt a desperate sense of being connected to this IV that was feeding me drugs whose effects were suddenly unexpected. Then things spiraled from there. I went into a panic. This sense of panic was unlike anything I have ever experienced in my life (and I've had my share of hospital horrors). I thought my heart was going to explode. Luckily my friend was next to me. I told him to get a nurse. I told the nurse frantically that I didn't know what was happening to me, I was freaking out, but I begged him to do something. He said I was probably having an "anxiety attack", which can happen with Reglan ("anxiety" sounds like a euphemism for what I was living through, but whatever...). He moved quickly, and hooked up some Benadryl to the IV. I also asked him to get me out of the dark, airless room I was in, as I felt like I was going to choke from the claustrophobia. Between the Benadryl (which apparently counters the panic effects of a Reglan reaction) and standing out in a spacious, well-lit hallway, I felt a couple of degrees removed from hell. Anyhow, there's my Reglan tale. R.M., Newton, MA