Communicating hydrocephalus is a form of Hydrocephalus which includes the presence of blood or blood products that are mixed with cerebrospinal fluid. This is most usually caused by a hemorrhage or infection. Communicating hydrocephalus is also known as Non-obstructive Hydrocephalus.

Communicating hydrocephalus is a medical condition in which there is an accumulation of cerebrospinal fluid (CSF) within the brain's ventricles, leading to increased pressure on the brain. This condition is called "communicating" because there is no blockage or obstruction of the flow of CSF between the ventricles and the subarachnoid space surrounding the brain and spinal cord.

In the psychology context, communicating hydrocephalus may be associated with cognitive and behavioral changes, especially in older adults. Research suggests that communicating hydrocephalus may be associated with deficits in attention, memory, processing speed, and executive function. These deficits may be reversible with treatment, such as the placement of a shunt to drain the excess CSF and reduce pressure on the brain.

Other potential symptoms of communicating hydrocephalus may include headache, nausea and vomiting, visual disturbances, gait disturbances, and urinary incontinence. It is important to seek medical attention if any of these symptoms are present, as untreated communicating hydrocephalus can lead to serious complications, including brain damage and even death.

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