Final answer:
In children, especially infants, bulging fontanel, seizures, and irritability are more common following an isolated head injury, which requires immediate medical attention.
Step-by-step explanation:
Children often display different symptoms following an isolated head injury when compared to adults. Signs such as bulging fontanel (soft spot), seizures, and irritability are more common in children, especially infants. This contrast is due to developmental differences in children's brains and skulls, including features like an open fontanel which can bulge when there is increased intracranial pressure.
Other symptoms that are more frequently manifest in children include changes in eating or nursing habits, persistent crying, and an inability to be consoled or wakened. These signs may indicate the necessity for immediate medical attention, as they can suggest more serious issues stemming from the head injury.