Q00-Q07: Congenital malformations of the nervous system

Q03: Congenital hydrocephalus

Congenital hydrocephalus is a medical condition where an excess of cerebrospinal fluid (CSF) accumulates in the ventricles of the brain at birth or during infancy. The accumulation can be due to either a blockage, overproduction, or inability of the body to absorb the CSF. The excess fluid increases pressure in the brain that can lead to an enlarged head size, otherwise known as macrocephaly. Symptoms typically include irritability, poor feeding, and abnormal upward gaze. As the child grows, there may be signs of developmental delays, difficulty in walking, and loss of coordination. The progression of this condition can vary widely from person to person depending on the severity and timing of the diagnosis. The condition affects primarily the central nervous system and may impact the child's physical and cognitive development.