Anemia is lack of Iron in the blood, but cerebral anemia is "Cerebral Anemia. ... Thus cerebral anemia may attend the general anemia coming from a severe hemorrhage or from profuse diarrhea, or from pernicious anemia, leukemia, and various cachexias, or it may be due to the accumulation of a large quantity of blood in the peritoneal cavity following the removal of ascitic fluid."
The nurse said he was merely fatigued from lack of sleep ... so O.O
Cerebral anemia? What?