Dr. Patten Replies

Dam M. Phenytoin, toxicity. In: Penry J.K. , Pippenger C.E. , eds. Antiepileptic Drugs. New York: Raven Press, 1982.

Davies-Jones G.A.B. Anticonvulsants. In: Dukes M.N.G. , ed. Myler's side effects of drugs, eleventh edition. Amsterdam: Elsevier, 1988.

Goggans F.C. A case of mania secondary to vitamin B-12 deficiency. Am J Psychiatry 1984; 141(2): 300–301.

Zucker D.K. , Livingston R.L. , Nakra R. B-12 deficiency and psychiatric disorders: case report and literature review. Biol Psychiatry 1981; 16(2): 197–205.

Lindenbaum J.L. , Healton E.B. , Savage D.G. Neuropsychiatric disorders caused by cobalamin deficiency in the absence of anemia or macrocytosis. N Engl J Med 1988; 318(26): 1720–1728.