Causes of acute abdominal pain
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Common Causes of Acute Abdominal Pain
Acute abdominal pain can be caused by a wide range of conditions, both surgical and non-surgical, and affects people of all ages. The most frequent causes include nonspecific abdominal pain, gastroenteritis, appendicitis, cholecystitis (gallbladder inflammation), urolithiasis (kidney stones), diverticulitis, and intestinal obstruction. Nonspecific abdominal pain remains the most common diagnosis, accounting for about one-third of cases, followed by appendicitis, biliary disease, bowel obstruction, acute pancreatitis, and diverticulitis Allen2023Yew2023Mostafa2019+1 MORE. The prevalence of specific causes can vary by age and sex, with appendicitis more common in younger patients and intestinal obstruction more frequent in older adults. Cholecystitis is more common in women, while intestinal obstruction is more common in men .
Gastrointestinal, Urological, and Vascular Causes
The gastrointestinal system is a major source of acute abdominal pain, with conditions such as appendicitis, bowel obstruction, diverticulitis, and pancreatitis being significant contributors. Urological causes like kidney stones and urinary tract infections are also common. Vascular causes, such as mesenteric ischemia, though less frequent, are important to consider due to their severity Allen2023Yew2023Mostafa2019+1 MORE.
Gynaecological and Genitourinary Causes
In women, especially those of childbearing age, gynaecological conditions such as ectopic pregnancy, pelvic inflammatory disease, and adnexal torsion must be considered. These can be life-threatening if not diagnosed promptly. Other genitourinary causes, including urinary tract infections, can also present as acute abdominal pain Allen2023Yew2023Flasar2006.
Non-Surgical and Systemic Causes
Not all acute abdominal pain is due to surgical conditions. Non-surgical causes include infections (like gastroenteritis), metabolic disturbances, and acute flare-ups of chronic diseases. Systemic diseases, such as systemic lupus erythematosus (SLE), can also cause acute abdominal pain, with lupus enteritis being a notable example in SLE patients Stickland2023Lee2002Fagerström2017.
Extra-Abdominal and Thoracic Causes
Sometimes, the source of acute abdominal pain is outside the abdomen. Thoracic conditions such as pneumonia, pulmonary embolism, or pericarditis can present with abdominal pain, especially when there is pulmonary consolidation or fluid in the pleural or pericardial spaces. It is important for clinicians to consider these extra-abdominal causes, especially when abdominal findings are inconclusive Vriesman2010Yew2023.
Demographic and Clinical Factors
The likelihood of specific causes of acute abdominal pain can be influenced by factors such as age, sex, and underlying health conditions. For example, hypertension and diabetes are common comorbidities in patients presenting with acute abdominal pain. The distribution of causes also varies with demographic factors, highlighting the need for individualized assessment .
Diagnostic Approach
A thorough history and physical examination are essential to narrow down the possible causes of acute abdominal pain. Laboratory tests and imaging studies, such as ultrasound and computed tomography (CT), are often required to confirm the diagnosis, especially for conditions like appendicitis, cholecystitis, and mesenteric ischemia. In women of reproductive age, pregnancy testing is crucial to rule out ectopic pregnancy Allen2023Yew2023Sapmaz2017.
Conclusion
Acute abdominal pain has a broad range of causes, including gastrointestinal, urological, gynaecological, vascular, non-surgical, and even extra-abdominal conditions. Nonspecific abdominal pain remains the most common diagnosis, but careful assessment is needed to identify serious and potentially life-threatening causes. Demographic factors and a systematic diagnostic approach are key to effective management and treatment.
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