Is this something to send to them ahead of appt time, so they can read up before you get there?

I would write it up in some sort of order , like if you know some things are related to one area put those together, then the other issues in another section , then add any miscellaneous symptoms at the end..

But I would put everything on the list , keep it clear and to the point as much as possible, so they don't loose interest or get confused as they read through it.
Maybe even double space it so they can make a note if they need to for follow up questions.