G91.9

Clinical Causes: Obstruction of CSF flow due to congenital malformations or acquired conditions Impairment of CSF absorption within the arachnoid villi Overproduction of cerebrospinal fluid by the choroid plexus Brain tumors or cysts blocking normal CSF pathways Head injuries leading to bleeding or scarring that obstructs CSF flow Infections such as meningitis or encephalitis causing scarring or inflammation Subarachnoid hemorrhage Anatomical abnormalities present at birth without a clear cause identified

Key Symptoms: Headaches, often worse in the morning Nausea and vomiting Balance and coordination difficulties Gait disturbance or difficulty walking Cognitive challenges such as memory problems or confusion Vision problems, including blurred vision or double vision Behavioral changes and irritability Seizures in some cases Aged individuals may experience urinary incontinence and frequent head pressure

Diagnosis Path: Neuroimaging techniques such as Magnetic Resonance Imaging (MRI) or Computed Tomography (CT) scans to visualize ventricular enlargement Assessment of neurological function through physical and neurological examinations CSF analysis to rule out infections or bleeding, if necessary Evaluation of symptoms alongside imaging findings to confirm diagnosis

Treatment Protocols: Surgical intervention is commonly required to manage hydrocephalus Placement of a ventriculoperitoneal (VP) shunt to divert excess CSF from the ventricles to the abdominal cavity for absorption Endoscopic third ventriculostomy (ETV) to create an alternative pathway for CSF flow in suitable cases Regular monitoring of shunt function and neurological status Addressing underlying causes if identified, such as tumor removal or treatment of infections Supportive therapies, including physical therapy, occupational therapy, or cognitive rehabilitation, to manage symptoms