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Hello, this is Dr. David. I am reviewing your question now and will be with you momentarily.
I am glad your bun and creatinine levels are normal.
bun/creatinine ratios are only important if you have a known kidney disorder.
it doesn't sound like you have a known kidney disorder.
your kidneys don't sound like they are causing your symptoms.
you could have a sinus infection causing headaches and facial numbness. do you have sinus congestion/
have you had your thyroid hormone levels checked? you could be having declines of your estrogen levels as well.