There is a great deal of correlation between the various types of clinical pictures seen in cerebral palsy and the etiologic factors. Thus there are certain noxae which have a predilection for certain portions of the brain. Anoxia tends to attack the extrapyramidal tract system, whereas hemorrhages tend to attack primarily the pyramidal tract.
Thus, one can often prognosticate on the basis of history the clinical pictures which are found. A classification of the various types of cerebral palsy can thus be based either upon an etiologic basis or upon a clinical basis. [see table 1 in source pdf]