Epona, I feel so bad for you! I think your doctor was very wise and kind to give this the attention it so obviously needs!
I can still remember my previous GP, I had been suffering different kinds of headaches and migraine for 5 years and all he could think of was ask me stupid questions like: "How are you doing at school" and "Do you have a boyfriend"
My new GP reacted the same as yours, asked a million questions and took it seriously because, as in your case, I am way to young to have symptoms like these (walking the stairs may be challenging for a 90-year-old, but shouldn't be so for us!) I hope we'll both get better soon!
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Melusine
Your voice is ambrosia