Developmental Lag: The most common cause is a developmental delay in the maturation of the nervous system and bladder control. The child’s brain has not yet developed the ability to respond to bladder signals during sleep.

Genetic Factors: A strong family history of bedwetting significantly increases a child’s risk. If one or both parents wet the bed as a child, their child is more likely to as well.

Hormonal Imbalance: The body produces an antidiuretic hormone (ADH) that signals the kidneys to produce less urine at night. If a child’s body does not produce enough ADH, their bladder may fill up too quickly, leading to bedwetting.

Small Bladder Capacity: Some children may have a bladder that is not yet mature enough to hold urine for an entire night.

Deep Sleep: The child may be a very deep sleeper and may not wake up in response to the signals from their bladder.

Urinary Tract Infection (UTI): A UTI can cause a sudden onset of bedwetting in a child who was previously dry.

Psychological Stress: In cases of secondary enuresis, psychological factors such as stress, anxiety, or a significant life change (e.g., a new sibling, starting school) can be a contributing factor.

Underlying Medical Conditions: In rare cases, bedwetting can be a symptom of an underlying medical condition, such as a urinary tract abnormality, chronic constipation, or sleep apnea.