Stabbing Pain in Left side of Back, Hurts when I take a deep breath. WebMD experts and contributors provide answers to: when I take a deep breath in it hurts the lower left side of my back. The last three days i've had a sharp pain under my right rib cage. It hurts to breathe, and it hurts when i'm just sitting. About three to five times a day, I'll get. Is this topic for you? This topic provides an overview of upper and middle back pain. If you have low back pain or neck pain, see the topic Low Back Pain or Neck Pain. Pain Under Left Rib Cage. Pain under the left side of the rib cage is experienced by many people around the world, even by those in sound health otherwise. Pain Under Right Rib Cage. The causes of pain under the right rib cage range from inflamed costal cartilage, fractures, or cracked ribs due to an injury, to referred. Sharp temporary cramping under left rib cage? It comes and goes throughout the day. Hurts to breathe. I’m experiencing pain in my lower right rib cage and it goes through my back. I don’t know what could this be but every time I walk, I’m feeling that pain. I have been telling doctors for over 3 years that I have this constant soreness all around my rib cage and in my arm pits. They just shrug and say take. What Can Cause Pain Under the Left Ribs? Pain under the left rib cage can arise from any organ in the left upper abdomen or chest, spine, or the left ribs themselves.