Severe pain caused by the attempted (and sometimes successful) expulsion of a gall-stone from the gall-bladder via the BILE DUCT. The pain, which is felt in the upper right corner of the abdomen, may last for an hour or more. Strong ANALGESICS are required to subdue the pain and the patient may need hospital admission for examination and eventual surgery. Attacks may recur, and the pain is sometimes mistakenly diagnosed as signalling a heart attack.
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