The term 'Sudden Pain in the Side' can be summarized as a sharp, unexpected pain that occurs on one side of the body. This type of pain is often referred to as a 'STITCH, ' which is a six-letter word. Stitches are usually caused by physical activity, such as running or playing sports, and can be very painful. They can also be caused by other medical conditions, such as appendicitis or gallbladder problems. Treatment for stitches usually involves rest and pain relief medications.