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Differential Diagnosis of Pediatric Acute Abdominal Pain

There are a variety of conditions that may cause acute abdominal pain in a child. The age of the child determines the differential diagnosis.

Differential diagnosis of acute abdominal pain by age:

The causes of abdominal pain in a child are divided into surgical treatment, medical treatment, and non-specific abdominal pain.

Causes of abdominal pain Details
Surgical causes
Acute appendicitis Classically begins as periumbilical pain that migrates to the right iliac fossa; occurs in school-aged children and adolescents.
Intussusception  Most common between 3–8 months of age. Intermittent attacks of abdominal pain with screaming, pallor, and drawing of legs.
Volvulus Occurs secondary to malrotation in an infant who classically presents with bilious vomiting due to small bowel obstruction.
Strangulated inguinal hernia Tender groin mass present.
Peritonitis Generalized tenderness with peritoneal signs, including guarding and rigidity. The patient may lie still to avoid aggravation of pain.
Pancreatitis Epigastric or left upper quadrant pain that radiates to the back.
Testicular torsion Tender, swollen testes seen in adolescents.
Trauma Mostly occurs in school-aged children;  history or signs of trauma present.
Medical Causes
Gastroenteritis Triad of fever, diarrhea and abdominal pain.
Hepatitis Pain in the right upper quadrant.
Inflammatory bowel disease May be associated with episodic abdominal pain over a long time period.
Constipation Common in infants and school-aged children.
Lower lobe pneumonia Referred pain to the upper abdomen accompanied by respiratory symptoms.
Urinary tract infection Presence of urinary symptoms such as dysuria.
Diabetic ketoacidosis Associated with hyperglycemic symptoms of polyuria, polydipsia, polyphagia, and dehydration.

Other causes of pediatric acute abdominal pain include the following:

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