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Short answer When left-side pain needs a doctor Common questions Related questions Sources**Most left-sided pain comes from something ordinary in that area, such as trapped gas, constipation, indigestion, or a strained muscle, but the stomach, colon, kidney, spleen, or heart can also be the source.**
Where the pain sits is the biggest clue: upper left points toward the stomach, spleen, or lower left lung, while lower left points toward the colon or, in women, an ovary. How it behaves matters too, since cramping that comes and goes fits gas or bowel causes, sharp pain that changes with movement or a deep breath fits muscle or rib causes, and severe waves running from the flank to the groin fit a kidney stone. Track when it started, what makes it better or worse, and whether eating, stooling, or urinating changes it. Steady fluids, fiber, gentle walking, and easing off heavy lifting help many of the common causes settle within a few days. Pain with chest pressure, breathlessness, fever, or blood in stool or vomit needs a clinician right away.
When left-side pain needs a doctor
Common questions
why does my left side hurt
Pain on your left side has many possible sources, and location helps narrow it. Upper left pain often comes from gas, indigestion, gastritis, a strained muscle, or sometimes the spleen or lower left lung. Lower left pain is commonly constipation, trapped gas, or diverticulitis, and in some people an ovarian or kidney cause. Pain that comes in severe waves from the flank toward the groin suggests a kidney stone. Pain that sharpens when you twist, press the spot, or breathe deeply is usually muscular or from the rib area. Seek urgent care for chest pressure, shortness of breath, fever with a tender belly, vomiting blood, black or bloody stools, fainting, or pain that keeps getting worse.