There are some relatively typical symptoms of hydrocephalus in infants, so that they can be detected and treated early. The first point is the progressive enlargement of the baby’s head after birth, which is obviously different from other normal children, sometimes with a large head and small face, and accompanied by superficial venous anger. The second point is that if the enlargement of the child’s head is not obvious, you can also look for changes in the fontanelle. If the fontanelle is still swollen and not sunken when the child is held vertically and quiet, and if no normal pulsation is seen, then there is intracranial hypertension. The third point is the sunset sign. If hydrocephalus develops further and compresses the brainstem, the baby’s eyes will not be able to look up. The fourth point, the translucency of the head, is often seen in severe hydrocephalus, and when illuminated with a bright flashlight, the head is sometimes felt to be a transparent sensation. The fifth point, atrophy of the optic nerve papillae, and in some infants, neurological dysfunction can occur.