Big Toe Pain

Yes, I should gave added to my reply really, that gout is the big obvious one that hopefully a GP would have considered quickly.
No harm in mentioning it when you get the results though, if they’ve considered it they will say why they’ve discounted it as a differential diagnosis.
Regardless of what it is, cutting down on salt, especially if you know you’re a little heavy with the grinder is a good thing. There is a lot of hidden salt in foods already and has a huge knock on effect on your health, causing raised blood pressure and potentially heart problems.