Communicating hydrocephalus in the intellectual deterioration of diabetes mellitus.

Atherosclerosis of cerebral vessels (Grunnet 1963) and hypoglycaemia (Bale 1973) are thought to be involved in the premature intellectual deterioration which occurs in some diabetics. Two diabetics are now reported who, in the course of their investigation for intellectual deterioration, were found to have communicating hydrocephalus.