Biliary Atresia: This condition is characterized by a blockage or absence of the bile ducts, leading to a buildup of bile in the liver. It is a common cause of clay-colored stools in infants and requires prompt surgical intervention to prevent liver damage.

Neonatal Hepatitis: Inflammation of the liver in newborns can cause clay-colored stools due to impaired bile production or flow. This condition can result from various causes, including infections, metabolic disorders, or genetic conditions.
Choledochal Cyst: A congenital anomaly of the bile duct that can cause obstruction and lead to clay-colored stools. It may also be associated with abdominal pain and jaundice.
Alagille Syndrome: A genetic disorder that affects the liver, heart, and other parts of the body, leading to bile duct paucity and potentially causing clay-colored stools among other symptoms.

Intestinal Obstruction: Although less common, intestinal obstruction can cause clay-colored stools if the obstruction is proximal and involves the bile ducts or ampulla of Vater. This is a medical emergency requiring immediate attention.
Spontaneous Perforation of the Bile Ducts: A rare but life-threatening condition where the bile ducts rupture, potentially leading to peritonitis and sepsis. Prompt diagnosis and surgical intervention are crucial.

Progressive Familial Intrahepatic Cholestasis (PFIC): A group of rare genetic disorders that lead to cholestasis (bile flow reduction) and can cause clay-colored stools among other symptoms like jaundice and pruritus.
Congenital Hepatic Fibrosis: A rare condition characterized by fibrosis of the liver, which can impair bile flow and lead to clay-colored stools, although this is less common in infants.
Paucity of Interlobular Bile Ducts: A condition where there is a reduction in the number of bile ducts within the liver, which can lead to cholestasis and potentially clay-colored stools.