system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 6-month-old baby with H/O bloody diarrhoea of 2 days duration with abdominal distension and on examination the baby screams, diagnosis is –
assistant
The correct answer is  Clinical features of intussusception

Sudden onset
Severe paroxysmal colicky pain that recurs at frequent intervals.
Pain is accompanied by straining efforts with legs and knees flexed and loud cries (screaming).
Lethargy
Blood and mucus produce a current jelly stool.
Reflex vomiting is an early sign.
In later stages, vomiting becomes bile stained.
Abdominal distension and tenderness develop as intestinal obstruction becomes more acute.
Tender sausage - shaped palpable mass in the right upper abdomen with its long axis cephalocaudal.
Occasionally intestine prolapses through the rectum.