What symptom may indicate chronic subdural effusion in a neonate?

An enlarging head without clinical signs is indeed a significant indicator of chronic subdural effusion in neonates. In this condition, the accumulation of fluid in the subdural space can lead to increased intracranial pressure, and one of the most notable symptoms is head enlargement due to the fluid's push against the cranial bones, especially in infants whose skulls are still soft and malleable.

The increase in head circumference may occur without immediate, obvious neurological symptoms, which can make detection challenging. Parents or caregivers might notice that the baby's head appears larger than expected for their age, and routine pediatric examinations may reveal this abnormal growth.

Other symptoms in different contexts, such as focal cerebral disturbances or signs of hyperactivity, would typically indicate more acute neurological conditions rather than a chronic issue like subdural effusion. Likewise, clear communication abilities would not be a relevant consideration in a neonate, as their communication skills develop with age, making it an inappropriate option for this situation.