I am a 65 year old very healthy female, walk a mile a day, take no meds except HRT patch. About 6 month ago I noticed a buzzing feeling in my feet and ankles. This is not tingling as in diabetes, but much like having a bee in a jar and shaking it. Lately, I wake up in the morning and my jaw, neck and upper arms are doing the same thing. I thought it was my heart going into a jackhammer mode, but on checking my pulse, it is, as usual, slow and steady. I do have low blood pressure. This feeling usually passes upon rising and does not reoccur any other time in the day. I have read that finding some neurological cause can be exhausting with all of the tests the seem to come to no conclusion. Any suggestions??