What is the likely effect of hydrocephaly if left untreated?

Hydrocephaly, characterized by an accumulation of cerebrospinal fluid within the brain's ventricles, can have significant effects on both motor and cognitive functioning if not treated.

Patients with untreated hydrocephaly are likely to experience reduced motor skills due to the increased pressure on the brain tissues. The pressure can hinder the proper development and functioning of motor pathways, resulting in delays in gross and fine motor skills.

Furthermore, potential cognitive decline is another significant risk. The fluid buildup can lead to structural changes in the brain that affect cognitive functions such as memory, attention, and processing speed. This impact on brain development can result in learning disabilities and challenges in daily activities that require cognitive processing.

Thus, the correct choice reflects the comprehensive nature of hydrocephaly's impact on both motor skills and cognitive functioning, underscoring the importance of prompt treatment to mitigate these effects.