Professional and Linguistic Assessments Board (PLAB) Practice Exam

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What symptom is indicative of intussusception in infants?

Frequent vomiting
Abdominal pain with drawing legs to the chest
Diarrhea
Constipation

The correct answer is: Abdominal pain with drawing legs to the chest

Abdominal pain with drawing legs to the chest is a classic symptom of intussusception in infants. This condition occurs when a part of the intestine telescopes into an adjacent segment, leading to obstruction. The intense pain often causes infants to instinctively flex their legs toward their chest as a response to discomfort, signaling significant distress. While frequent vomiting can occur with intussusception, it may also be seen in other gastrointestinal issues and is not as specific. Diarrhea is typically not associated with intussusception. Constipation may also be a symptom in some cases, but it does not distinctly point to intussusception. Therefore, the characteristic presentation of abdominal pain coupled with the drawing of legs to the chest is the most indicative symptom of this serious condition in infants.