The pain is usually caused by intestinal spasm and is mainly seen in the following diseases: 1. Acute gastroenteritis: In addition to stomach cramps, diarrhea, nausea, vomiting and fever can occur. 2. Urinary stones: The pain is manifested as abdominal cramps and often spreads to the perineum, and some patients may experience lumbar pain and percussion pain in the kidney area during physical examination. 3. Intestinal obstruction: The clinical manifestations are abdominal pain, abdominal distension, nausea, vomiting, and anal cessation of venting and defecation. 4: The clinical manifestations are abdominal pain, abdominal distension, nausea, vomiting, as well as anal stoppage of exhaustion, defecation, and usually writhing pain around the belly button. 4, constipation: it also leads to writhing pain in the stomach, and patients need laxative and other treatments.