Peripheral Cyanosis in Newborns Definition: Peripheral cyanosis (also called acrocyanosis) is a bluish discoloration of a newborn’s hands and feet while the lips, tongue, and central body remain pink. It is common in the first 24–48 hours after birth. Cause: It happens due to: • Immature circulation • Slow blood flow to the extremities • Exposure to cold • Normal transition from fetal to newborn circulation It is usually physiological (normal) in healthy newborns. Clinical Features: • Blue or pu