Don’t be discouraged. A most likely cause for the cancellation of the MSLT is that you do have sleep apnea. And I really hope you do because it is usually so much easier to rectify.
Now, that doesn’t mean that you don’t have Narcolepsy with Cataplexy BUT there is a method to the madness. First, they will try and get your sleep apnea stabilized THEN if you are still napping and sleeping excessively, they will order another psg and mslt.
I sincerely hope that you only have sleep apnea.
Best of luck! And kudos to you for seeking solutions with regards to your well being! Please keep us posted on your journey.
p.s. if you still suspect that you have cataplexy, under the headings in the tool bar at the top of this page, you will see “Resources”. Click on that and read a member’s primer on cataplexy. His handle is Sk8aplexy. It’s bang on. Remember that cataplexy is triggered by an emotional response to an UNEXPECTED event.