huge discomfort blow left rib

When there is formation of sacs in the intestinal walls it is known as diverticulosis. When these sacs or pouches become inflamed, it is known as diverticulitis. Left side pain under rib cage is a very common indicator of this illness, and a proper diet can remedy the situation pretty soon. If an elderly person is experiencing intense pain under the ribs and there is also tenderness in this region, in all likelihood it is diverticulitis. (end quote).

I know that my symptons are caused by build up of gas in the large intestine as I was infected with an intestinal parasite which caused damage to the intestine which causes inflamation and build up of gas pockets that cause pain and prevent food from passing through leading to abdominal bloating (all the food stays in my stomach) until such time as the swelling goes down and the gas passes ( I end up passing gas none stop for days!).

Yesterday, I ate half a pizza and shortly after I began to feel discomfort under the left rib cage and this morning it is unbearable except when I apply pressure to the area with my hand.

This does not show up on any normal tests. X-rays should show the pressence of the gas pockets, otherwise the only way to see if the aforementioned sacs or pouches (or other cause of intestinal inflamation) is with a scope. My condition was originally mis-diagnosed (by two young interns) as apendicitus (which I don't have, and they were pushing right on my scar) until a senior doctor came in and listened to my abdominal area and said, "You have gas! Send him to X-ray".

I know that certain foods will trigger my symptoms, but I can't live without them, so I have to eat them in moderation.

Cheers, Pat...

Have viewed all the replies you've had so far and like most of them have the same type of symptoms  Initial doctor visit though it was a kidney stone buta sky high white blood count prompted a CT scan which revealed a left hip which needs replacing, a hyatus hernia which needs fixing, Diviticular disease and growths in kidney. The latter was investigated with Ultra Sound scanning but showed no stones but some growths/ cysts in my right kidney.  This isn't the cause of this awful pain I'm experiencing which has mad me pass out 7 times now! The hip pain is totally different and Ihave to deal with that accordingly till it's been replaced As for referred pain from the other sources the doctor isn't convinced so has put me on medication for the hiatus hernia and will be starting an antispasmodic medication to relax the colon,bowel,bladder,tubes, stomach and IBS. If the pain persists I will then see consultant and have further scans. Like most of you the doctor is baffled but sadly the pain seems to be getting worse and like toothache is always there  Will let you know how I get on in the coming weeks I'm 69 and quite fit in an active job but also have diabetes(diet controlled) Fibromyalgia and Polyneuropathy  I dislike taking any medication or having to visit the doctor about issues but the pain…. That's something else!