I agree with @Isaiah_40_31 that we’ve had members with both, the symptoms do appear to be very similar… Here’s one post:
The Importance of Diagnosing Ernest: A Crucial Study - General - Living with Eagle
It is a worry going ahead with surgery in case it doesn’t help with your symptoms, you want to get it right first time, so I totally understand you need to get clarity, and I think it’s right that you do. I hope you get answers soon 
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