Why do children hum after head injury?

Children may hum after a head injury as a way to self-soothe or cope with discomfort and anxiety. Humming can serve as a calming mechanism, helping them to regulate their emotions and focus on something familiar amidst the confusion of their situation. Additionally, it may provide a sense of control and distraction from pain or fear. However, if a child exhibits unusual behavior after a head injury, it's important to seek medical attention to rule out any serious complications.