I thought I'd list all my symptoms here, so others can see, and also to provide a baseline for me to check back against later:
Headaches, blurry vision, dizziness, muffled hearing, balance problems, inability to remember words. poor memory,poor concentration, snuffles, tiredness, lack of stamina.
Muscle weakness, clumsiness, muscle twitching, aches in legs, poor body temperature control,, easily tired in company, by emotions, mild shocks like a slamming door - anything that provides an adrenaline rush.
Messed up sleep pattern
Slow to waken and/or react