Hydrocephalus disease with which to differentiate?

In infants, should be aware of the situation and identification of the following: (1) premature infants: the skull increases faster, somewhat similar to hydrocephalus, but not ventricle. (2) rickets: head for the square and increased more than any other symptoms of rickets. (3) The head of deformity, skull, faster growth there is an obvious lack of intelligence, no eyes droop phenomenon normal ventricular angiography. (4) chronic subdural hematoma, skull increase slower, more visible subdural wear red or yellow liquid, fundus hemorrhage, CT can be confirmed. (5) intracranial space-occupying lesions such as tumor, abscess, etc..