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• A to Z: Cholelithiasis (Gallstones)

  Learn about cholelithiasis, the presence of gallstones (hard, pebble-like objects made of bile).

• A to Z: Chondrodystrophy

  Learn about genetic disorders and conditions that affect growth and development.

• A to Z: Chronic Lymphocytic Thyroiditis

  See: Hashimoto’s Thyroiditis.

• A to Z: Cleft Lip, Bilateral

  Learn about bilateral cleft lip, a common birth defect in which a baby’s lip doesn’t form properly, resulting in splits (clefts) on both sides of the lip.

• A to Z: Cleft Lip, Unilateral

  Learn about unilateral cleft lip, a common birth defect in which a baby’s lip doesn’t form properly, resulting in a split (cleft) on one side of the lip.

• A to Z: Cleft Palate With Cleft Lip, Bilateral

  A cleft palate with a bilateral cleft lip is a common birth defect in which a baby’s lip and palate (roof of mouth) don’t form properly. As a result there is a split or opening (cleft) on both sides of the lip that can extend all the way from the nose to the back of the palate.

• A to Z: Cleft Palate With Cleft Lip, Unilateral

  A cleft palate with a unilateral cleft lip is a common birth defect in which a baby’s lip and palate (roof of mouth) don’t form properly. As a result there is a split or opening (cleft) on one side of the lip that can extend all the way from the nose to the back of the palate.

• A to Z: Clubfoot

  Clubfoot is a birth defect that causes one or both of a baby’s feet to turn inward and downward, giving the foot or feet a club-like appearance.

• A to Z: Coarctation of the Aorta (COA)

  Learn about coarctation of the aorta, a treatable congenital heart defect in which a person’s aorta is narrowed at some point.

• A to Z: Colic

  Colic is defined as crying for more than 3 hours a day, for more than 3 days a week, for at least 3 weeks.