hi marg
i'm sorry to hear that you are struggling like we do with our difficult child's diagnosis. ugh is all i can say. yet it sounds like you have the right mindframe that being listen to your body know when to slow down and be involved in everything you can. the arm thing certainly does sound like it and the brain fog.
with me it's alot of dizziness and memory loss body aching numbing feet and fingers.
ok bedtime now i wanted to say hi quick.