1, female:

If female patients have stomachache, then gynecological diseases, such as dysmenorrhea, adnexitis, pelvic inflammatory disease, ovarian torsion's disease and ovarian cyst, should be considered, which are mainly caused by uterine contraction.

2. Male:

If the male patient has a stomachache, it depends on the nature of the pain. If the pain persists with nausea, vomiting and fever, the possibility of appendicitis should be considered.

3. Side pain:

If the pain is lateral, consider urinary system diseases. For example, stones, urinary tract inflammation and cystitis may all cause stomach pain.

4. Pain in the left lower abdomen:

If the pain is in the left lower abdomen, it is very likely that sigmoid colon torsion and perforation will occur. These diseases may cause abdominal pain.