Howdy! First time poster here!
I couldn't find a useful answer anywhere through traditional search terms, and as of current I'm just not sure the literature on Narcolepsy addresses my specific problem, so I'll go ahead and describe it in hopes that someone else has the same thing going on.
Back in 2018 when I was working in a rehab setting as a psychometrist, one of my coworkers (a psychologist with neuroscience background) noticed that I had a pronounced limp in the mornings, but it went away usually around my second cup of coffee. There's been a lot of research done about motorband disruption caused by the same axis of disorder that Narcolepsy comes from (and why Parkinsonsism exists as an observational diagnosis), but I've found very little lab or research wise looking at psychomotor enhancement from caffeine in regards to Narcolepsy.
I have Type 1 symptoms with cataplectic episodes most notable when I am in bed (can look like a short full body seizure), and I'm keenly aware that without a 200mg caffeine tab in addition to the rest of my medication, my narcolepsy symptoms are far more severe. The problem for me, aside from not having specialized medicine for narcolepsy due to insurance problems, is that the threshold for caffeine is very high for good clinical effect (excess of 400mg/daily). I have other comorbid disorders of hormone and endocrine systems, so I gather that's why I am not having any issues with such high dosages daily.
Of peculiar interest is that my fine and gross motor abnormalities are alleviated by caffeine. I've done some small scale control tests between days where I skip tabs and coffee, and days where I do not, and my limp in particular seems most tied to that effect. The limp itself is pretty stiff on both legs, but I think the direct impact is my right leg, not sure.
If anyone else has similar experiences or thoughts about this, holler at me. I'm curious to know how many people might relate.