Does weight loss surgery, where total loss exceeds over twelve stones, cause Fibromyalgia to occur when previously Bilateral Sciatica has been diagnosed?

Unfortunately, no-one really knows what causes fibromyalgia, much less whether surgery is linked to the condition.

Traumatic mental or physical experiences, and extensive weight loss surgery would potentially give rise to either / are contributory factors, but I'd be loathe to say it was sufficient to cause fibromyalgia.

Instead, pain due to nerve damage is more likely but I wonder if you've asked  for a medical opinion on this?

For a list of contributory factors to the development of fibromyalgia please visit my 'What is fibromyalgia' page.

Sorry not to be of more help.

Best wishes

Earle