Upper-left abdominal pain can have various causes, ranging in severity from 'serious' to 'generally fatal'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose upper-left abdominal pain, we could:
|Possible Urgent Medical Need||30%||Unlikely|
|Subphrenic Abscess||1%||Ruled out|
UPPER-LEFT abdomen: Do you experience discomfort or pain behind the left rib cage?
Possible responses:→ No / only after meals / don't know
→ Occasional mild discomfort
→ Frequent mild and/or occasional moderate pain
→ Frequent moderate and/or occasional severe pain
→ Frequent or constant severe pain
The pain is on the side(s) of the affected lung(s).
The pain occurs on the affected side, in the chest, upper abdomen, and/or shoulder.