Paralysis is a disease in which the lower limbs of the body completely or partially lose their motor functions and random movements after the onset of a sensory disorder, and sudden paralysis of both lower limbs is a type of paralysis. Different parts of the body are damaged by different lesions, and different types of paralysis can be produced clinically, such as monoparalysis, hemiplegia, paraplegia, quadriplegia (sudden paralysis of both lower limbs), etc. Although the manifestations of paralysis are different, they have the same characteristics, i.e., the paralyzed muscles have increased tension, tendon reflexes are increased, superficial reflexes are disappeared, and there are the so-called conjunctive (joint) movements and pathological reflexes, the paralyzed muscles are not atrophic, and the electric test has no degenerative reaction. The patient has no degenerative response to electrical tests. Congenital hydrocephalus in infants and young children mostly begins to enlarge the skull a few weeks after birth, and is usually found gradually after 3 to 5 months, but there are also cases in which the skull is enlarged at birth. Clinically, it is particularly due to increased intracranial pressure that causes progressive abnormal enlargement of the skull, which is disproportionate to the growth of the body. The frontal region protrudes forward, the orbital apex is pressurized downward, both eyes are downward looking, the eyeballs are turned downward, resulting in whitening of the upper part of the sclera, the fontanelle is enlarged with increased tension, other fontanelles may be enlarged as well, the cranial sutures are separated, and the veins of the scalp are dilated. Cranial percussion shows a “broken pot sound”. In infants and young children, the bone sutures are not closed, and when the intracranial pressure increases, the skull can undergo compensatory enlargement, so the symptoms of increased intracranial pressure may not be obvious in the early stage. However, when hydrocephalus is severe and progresses rapidly, it can also appear, and its symptom is repeated vomiting. Cerebral degenerative changes, cerebral developmental disorders, central paralysis of the limbs, especially the lower limbs, often with intellectual changes and developmental disorders. The optic nerve is compressed and atrophied, which may lead to blindness. Nystagmus and convulsions are also common. Malformations in other parts of the body are also common. In a small number of cases, hydrocephalus can stop on its own after a certain period of time, and the skull will not continue to increase in size and the intracranial pressure will not be high, which will become “static hydrocephalus”.