• Katie L Buel, James Wilcox, and Paul T Mingo.
• Indiana University School of Medicine, Indianapolis.
• Am Fam Physician. 2024 Dec 1; 110 (6): 621631621-631.

AbstractAcute abdominal pain in children is a common presentation in the clinic and emergency department settings and accounts for up to 10% of childhood emergency department visits. Determining the appropriate disposition of abdominal pain in children can be challenging. The differential diagnosis of acute abdominal pain, including gastroenteritis, constipation, urinary tract infection, acute appendicitis, tubo-ovarian abscess, testicular torsion, and volvulus, and the diagnostic approach vary by age. Most causes of acute abdominal pain in children are self-limited. Symptoms and signs that indicate referral for surgery include pain that is severe, localized, and increases in intensity; pain preceding vomiting; bilious vomiting; hematochezia; guarding; and rigidity. Physical examination findings suggestive of acute appendicitis in children include decreased or absent bowel sounds, psoas sign, obturator sign, Rovsing sign, and right lower quadrant rebound tenderness. Initial laboratory evaluation may include urinalysis; complete blood cell count; human chorionic gonadotropin, lactate, and C-reactive protein levels; and a comprehensive metabolic profile. Ultrasonography, including point-of-care ultrasonography, for the evaluation of acute abdominal pain in children is the preferred initial imaging modality due to its low cost, ease of use, and lack of ionizing radiation. In addition to laboratory evaluation and imaging, children with red-flag or high-risk symptoms should be referred for urgent surgical consultation. Validated scoring systems, such as the Pediatric Appendicitis Score, can be used to help determine the patient's risk of appendicitis.

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