What causes sharp pain under the left rib?

Sharp pain under the left rib can come from several different causes, including the stomach, colon, spleen, left kidney, lungs, or the muscles/ribs of the chest wall.

Common causes include:

• Gas or digestive issues such as trapped gas near the colon, gastritis, acid reflux, or an ulcer
• Muscle or rib problems such as a strained intercostal muscle, costochondritis, or a rib bruise/injury
• Lung-related issues such as pleurisy or pneumonia
• Spleen or kidney problems such as an enlarged spleen or a left kidney stone/infection

Get urgent medical help now if the pain comes with:

• chest pressure, squeezing, or tightness
• pain spreading to the arm, shoulder, jaw, neck, or back
• shortness of breath
• dizziness, fainting, sweating, or nausea
• severe sudden pain, especially after an injury or trauma

If the pain is mild and seems related to movement, deep breathing, eating, or bowel symptoms, it may be less serious—but if it is new, persistent, worsening, or you’re unsure, you should be checked by a clinician.