Long-term pale stool might be a sign of conditions that affect the bile ducts, liver, or gallbladder. Newborns with neonatal jaundice may have clay-colored stool due to high bilirubin levels.

Melena appears as black, sticky, foul smelling stool and often signals upper GI bleeding Study shows most pediatric melena cases stem from upper gut ulcers, mainly duodenal Even 50–100 mL of blood in ...