Pins and needles pain in the chest and back, abdominal pain, and unformed stools are mainly considered to be related to intestinal spasm, pancreatitis, gastroenteritis and so on. 1. Intestinal spasm: when patients eat indigestible and irritating food, it will lead to abnormal peristalsis of the intestines, causing intestinal torsion and spasm of intestinal muscles, which will lead to pins and needles pain in the chest and back, abdominal pain, and failure to form stools. 2. Pancreatitis: when patients overeat and drink a lot of alcohol, it will stimulate the pancreas, resulting in pancreatic secretion disorders, inflammation, pancreatic fluid is released into the abdominal cavity in large quantities, stimulating the abdominal wall and the intestinal wall, appearing in the chest and back of the pinpoint pain, accompanied by abdominal pain, stools are not shaped. 3. Gastroenteritis: when the patient eats unclean food or catches cold in the abdomen, gastrointestinal dysfunction will occur, intestinal flora imbalance, and the above mentioned discomforts will also occur. In addition, the above symptoms may also be related to other causes, it is recommended to go to the hospital in a timely manner, complete the examination, under the guidance of a professional physician to clarify the cause of the disease, and give targeted treatment or treatment.