Question
A baby who is nearly 12 months old has recently shown a significant decrease in urine output after drinking. Is this a normal phenomenon?
Answer
Under normal circumstances, infants between 10 to 18 months of age begin to learn to control urination consciously. However, some children may still experience unintentional nighttime urination between the ages of 2 to 2.5 years, which is a physiological phenomenon. If children over 3 years old cannot control urination during the day or fail to wake up consciously to urinate during sleep, it is called primary enuresis or nocturnal enuresis. Additionally, some children can control urination between the ages of 2 to 3 but may experience nocturnal enuresis again between the ages of 4 to 5, which is known as secondary enuresis. Enuresis is common in children under 10 years old and occasionally can persist until the ages of 12 to 18. Therefore, if a 12-month-old baby has a reduced urine output without other discomfort symptoms, it may be a normal stage of urinary development. If parents