Intussusception clinically presents with abdominal pain, which occurs in fits and starts and has a regular pattern. This manifests as sudden spasmodic colic; the child cries and is restless, drawing the knees up to the belly and turning pale. The pain lasts for several minutes or longer, then eases off, allowing the child to fall asleep quietly. These episodes recur every 10 to 20 minutes as intestinal movements provoke further attacks. Vomiting occurs, initially consisting of curdled milk or food residues and later containing bile-stained, feculent fluid. Moreover, blood in stools is an important symptom. Symptomatically, stools may appear normal for a few hours, but within six to twelve hours, 85% of affected children might pass jelly-like mucus blood stools. A palpable lump can be detected in the upper right abdomen, indicative of the point of intussusception. As for general symptoms, the child may appear well early on, but as the condition worsens, intestinal necrosis or peritonitis may occur, leading to severe dehydration, high fever, lethargy, coma, shock, and other signs of systemic toxicity.