The possible clinical causes of left mid-abdominal stabbing pain, which is sometimes like pins and needles, include gastrointestinal dysfunction, intestinal spasm, acute gastroenteritis, colon tumor and so on. 1. Gastrointestinal dysfunction: Clinical factors leading to this condition include irregular diet, emotional abnormalities, dyspepsia, etc. People suffering from this condition will experience symptoms such as loss of appetite, nausea, vomiting, and pinprick pain in the abdomen. 2. Intestinal spasm: this refers to a paroxysmal abdominal pain caused by excessive contraction of the smooth muscle of the intestinal wall, which is usually associated with poor diet, gastrointestinal gas, environmental stimuli and other factors, the clinical manifestations of paroxysmal acute abdominal pain, vomiting, cold sweat and so on. 3. Acute gastroenteritis: this condition refers to acute inflammation of gastrointestinal mucosa caused by various reasons, which is usually related to unclean, irritating or cold food consumed by the sick people, and the causes of the disease include parasite, bacterial and viral infections, with clinical manifestations of diarrhea, abdominal pain, vomiting, and so on. 4. Colon tumor: the left half of colon has fine intestinal lumen and dry and hard feces. Left half colon cancer is often infiltrative, easy to cause ring-like stenosis, mainly manifested as acute and chronic intestinal obstruction. The size of mass is small, neither ulcerated and bleeding, nor toxin absorption; anemia, emaciation, malignant fluid and other symptoms are rare, and it is difficult to detect the mass. If a tumor is present in the descending colon or sigmoid colon, symptoms of stabbing pain in the left mid-abdomen may occur. If the associated pain symptoms persist, hospitalization is recommended, as well as targeted treatment.