What would cause a pain under the left rib cage?

Pain under the left rib cage can arise from any organ in the left upper abdomen or chest, spine, or the left ribs themselves. In otherwise healthy people, spleen irritation and gas built in the colon are main causes of pain under the lower left ribs. Pain can be also psychological, for example from neurotic heart, but physical causes have to be excluded first.

During or after running, walking or other physical activities, irritation of the spleen capsule can cause side pain under the lower left ribs. Pain usually goes away after some rest. Gas trapped in the bend of the colon lying near the spleen (splenic flexure) can cause pain in the left upper abdomen or in the left lower chest.

Distension of the upper abdomen, which can be tender to touch or not. Drum-like sound when tapping upper abdomen with the handPain in the upper left abdomen when bending or twisting the upper body. Pain is also often triggered by sitting down and relieved by standing up.

Constipation, diarrhea, abdominal cramps or excessive gas may be present in persons diagnosed with irritable bowel syndrome (IBS) . Some people try to get rid of trapped gas by leaning over the back of a chair, or fence. Sharp or dull, gnawing pain near the breastbone, affected by deep breathing, cough or moving the upper body may be due to costochondritis (costosternal syndrome).

Costochondritis is an inflammation of cartilages that connect the ribs with the breastbone. The exact cause is not always clear, but trauma, fibromyalgia or infection can be included. Costochondritis may be confused with heart attack.

Pain from costochondritis is localized in small area on one or both sidesof the breastbone, and is tender to touch, while pain from heart attack or angina pectoris comes from under the breastbone and is not tender to touch. Doctor can suspect costochondritis from symptoms and signs found during physical examination; costochondritis is not shown on X-ray of the chest. Costochondritis usually heals on its own in a week or two.

http://www.hdtune.com/download.htmlIf you don't want to download HD Tune or a similar program, you can get a lot of info about your computer by clicking on the Start menu, then Run... then type "msinfo32" and click OK. This will bring up the built-in System Information program. Within that program, go to Components>Storage>Disks, and it should show your hard drive model.

You can then Google that model number to get manufacturer specs on it.