Well, generally speaking, it could be caused because of the digestive process. If you consider how long it takes to digest the food you last comnsumed, it is generally during the night. Also, laying down can cause an inflamed gallbladder to press on the kidney, thus causing more pain.
I know this was the case for me until I had it taken out.
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zvi
(no subject)
Date: 2009-06-17 03:04 pm (UTC)I know this was the case for me until I had it taken out.