The choice is yours! Who do you get along with best, or have the most faith in? Or being more pragmatic about it, who’s it easier to get an appointment with?
I’ve got to say, I’ve never bothered with the MS nurses. I don’t know them, they don’t know me, and it’s not convenient for me to get to (though more accessible since they moved hospitals, as I don’t have as far to go).
I have found the GP quite helpful in prescribing things when the hospital either didn’t have any ideas, or prescribed stuff that didn’t work.
For example, I found quinine helped with cramps, even though the hospital had never suggested it, and it was my GP’s idea.
I don’t mean to sound anti MS nurses - I can’t form an opinion either way, as I’ve only ever been offered “a cup of coffee” with one - which I certainly didn’t think was worth a trip all the way to the hospital!
I just don’t think it’s a critical decision who you approach first, and you won’t get “told off” for picking he wrong one. GPs are licensed and qualified to treat everyday symptoms, and I have found that in many ways, the hospital expects them to. Not all day-to-day management needs input from a specialist.