Several factors can lead to SIADH in children. These include: - Neurological disorders: Conditions such as brain tumors, meningitis, and encephalitis. - Pulmonary diseases: Bacterial pneumonia and bronchiolitis can sometimes trigger SIADH. - Medications: Certain drugs, including anticonvulsants and chemotherapeutic agents, have been associated with inducing SIADH. - Postoperative states: Following surgeries, especially those involving the brain, there is a risk of developing SIADH.