What Causes Excessive Yellow Eye Discharge in Newborns?

Yellow eye discharge (eye “gunk”) in babies can stem from several causes. First, it may result from irritation caused by the baby’s eyelashes. During the early newborn period, a baby’s eyelashes often grow inward (a condition known as trichiasis), which can irritate the eyeball and lead to increased eye discharge. This is generally harmless and requires no special concern. Typically, by age one, the eyelashes begin growing outward naturally, and the amount of eye discharge gradually decreases. If present, it can be gently wiped away with a warm, damp cloth.

Second, excessive yellow eye discharge may indicate an underlying medical condition—such as conjunctivitis or neonatal dacryocystitis (infection or blockage of the nasolacrimal duct). It may also arise from keratitis triggered by internal “heat” (a traditional Chinese medicine concept referring to systemic inflammation or hyperactivity). In such cases, maintaining good ocular hygiene—such as gently cleaning the eyes—and ensuring adequate indoor ventilation may help alleviate symptoms.

Lastly, excessive eye discharge may reflect “internal heat accumulation” in the baby’s body—a TCM term describing systemic inflammatory or hypermetabolic states, commonly referred to as “excess heat” or “fire.” When internal heat is present, associated signs may include constipation and thickened tongue coating. Similarly, heightened internal heat in infants can manifest as increased eye discharge. Therefore, parents are advised to ensure adequate hydration and offer foods that clear heat and moisten the intestines.