The abdomen hurts when stretched or pulled.

　　The term "stomach" refers to the abdominal area. Pain upon stretching or pulling in the abdomen may be caused by excessive exercise, muscle spasms, lumbar muscle strain, or other conditions. It is important to seek timely medical attention and receive treatment under a doctor's guidance. Specific causes are analyzed as follows:

　　1. Excessive Exercise

　　During physical activity, especially at the beginning of exercise, anaerobic metabolism may occur, leading to the accumulation of large amounts of lactic acid in muscle tissues. This can irritate the abdominal wall muscles and cause noticeable pain, particularly when the abdomen is stretched. It is recommended to temporarily stop exercising, get adequate rest, and massage the affected area regularly to relieve discomfort.

　　2. Muscle Spasm

　　Intense physical activity or exposure of the abdomen to cold temperatures may trigger abdominal muscle spasms, which can also cause pain during stretching. Applying appropriate heat therapy to the painful area can help relax the spastic muscles and alleviate pain. If the pain is severe, patients may take medications such as chlorzoxazone tablets, phenylalanine tablets, or fluoxetine fumarate capsules as directed by a physician to relieve symptoms.

　　3. Lumbar Muscle Strain

　　Abdominal stretching is a form of physical movement. If the stretching technique is improper, it may irritate the腰部 tissues or surrounding nerves, resulting in pain and swelling. Patients can improve symptoms through sufficient rest and heat application. In cases of severe symptoms, medications such as ibuprofen sustained-release capsules or nimesulide dispersible tablets should be used according to medical advice to reduce discomfort.

　　Additionally, such pain could also result from medical conditions such as acute gastroenteritis, peritonitis, or appendicitis. Patients should visit a hospital for a thorough examination to determine the exact cause and receive targeted treatment accordingly.