What are the dangers of hydrocephalus? What are the dangers of hydrocephalus? The brain is the most important organ of the human body, although the weight of the brain accounts for only 2% of the weight of the whole body, but its blood accounts for 15% of the whole body blood circulation, brain oxygen consumption for adults is 20% of the whole body oxygen consumption, children up to 40%, brain tissue is also an abundant liquid organs, water accounts for 80%, once the water, electrolytes in the brain tissue pathological accumulation that causes hydrocephalus, directly endanger the life center, and even cause serious consequences. Hydrocephalus can be caused by a variety of reasons, and all kinds of clinical involved, common intracranial inflammation, cerebrovascular, traumatic brain injury, various endogenous or exogenous neurotoxins, hypoxic water and electrolyte disorders, acidosis, liver and kidney failure, etc. can cause fluid accumulation in the brain tissue through different mechanisms. (1) It can lead to mental retardation. There may be only mild memory and calculation loss, often accompanied by slowness, indifference and reticence. In severe cases, dementia may be present. A few may have agitation, irritability, laughter, hallucinations, delirium, etc. ②It can lead to mobility disorders. It often begins gradually after the onset of psychiatric symptoms, with difficulty starting and slow and unstable walking. Muscle tone and tendon reflexes are often increased and reflexes are positive. Sometimes there is mild hemiparesis. (iii) Urinary and bowel disorders. Frequent, incontinent or difficult urination and defecation, sometimes only in the late stage. In addition, there may be vertigo, transient disorders of consciousness, nystagmus, and Parkinson’s syndrome.