Milk discharge from neonatal breast commonly occurs bilaterally. Majority of them are benign in nature. Those cases usually require conservative management and will resolve with time. It typically occurs within one month of age in which late-onset of galactorrhoea in toddlers is indeed a rare occasion. Thus, an abnormal cause needs to be ruled out. An 18-months-old child had persistent milky discharge from the left nipple for several days without underlying specific identified causes. This case highlights the occurrence of physiological milk discharge can still possibly occur at the age beyond one-year-old despite its absence in the initial months of life. The principle observation at primary care is still adequate in managing such cases unless high suspicion of alarming disease arises. This case proved a late onset of physiological galactorrhoea can still occur in the early toddler age group.