I can empathize with you after struggling with narcolepsy for many years. I'm so glad you're going in for a sleep lab study. That should help to clinch the diagnosis. It sounds as if you're free of the night terrors now that you're an adult, and hopefully you'll find out that you don't have a problem with apnea as you apparently did before your tonsillectomy. I'm not an MD, but just from the reading I've done, if I heard your description of those spells of sudden weakness, I would think "cataplexy," not "panic attack." In any case, if you do find out that you have narcolepsy, possibly with cataplexy as well, there are some medications that can be pretty effective in helping you live with less disruption in your life. I hope that after the results of your sleep study are in, your neurologist will be more receptive, or will have more time, to talk things through with you. In my own case, medication has been very helpful (although there is no complete cure), and I have gradually gotten better at managing my sleep. I guess I have also gotten a little more "philosophical" -- I have faced and accepted the fact that I may still have an uncontrollable sleep attack now and then. It also helps to have a definitive diagnosis -- I was so confused and upset when I started having these "doze-off{" episodes in my early twenties, not having a clue what was happening to me! Now I know that I have a specific disorder, probably having to do with abnornalities in brain hypocretin -- nothing critical or fatal, nothing psychological or "all in my head"; just something to be managed, with my physician's help, as routinely and intelligently as possible, while keeping myself informed about new developments in sleep disorders research which might potentially benefit my condition. All best wishes to you -- you are doing the right thing to take good care of yourself by seeking expert evaluation.