Abstract
A 80-year-old man with cobalamin deficiency and no history of epilepsy developed a partial complex epileptic confusional status (ECS) unresponsive to acute i.v. diazepam. Brain CT scan and MRI investigation ruled out a focal cerebral lesion. Therapy with high doses (10,000 μg i.m. daily) of cobalamin alone was started, and the patient fully recovered in the following 72-hour. Control EEGs repeatedly performed days and weeks later showed progressive disappearance of the frontal interictal spiking, while the patient was on monotherapy with cobalamin (5,000 μg i.m. weekly). A month later the patient unfortunately discontinued replacement therapy and 13 weeks later he developed a fatal convulsive epileptic status. To our knowledge the association of ECS and cobalamin-deficiency has not been previously reported.
Similar content being viewed by others
References
Aguglia, U., Tinuper, P., Farnarier, G. (1983). État confusionnel critique prolongé à point de départ frontal chez le sujet âgé.Rev. EEG Clin. Neurophysiol. 13:174–179.
De Alvaro Prieto, M.A., Gonzalez, I.G., Del Rio-Hortega, Aparicio Blanco, M. (1990). Convulsione y encefalopatia como manifestacion inicial del déficit de cianocobalamina, sin alteraciones hematologicas.An. Med. Intern. (Madrid)7:34–35.
Drislane, F.W., and Schomer, D.L. (1994). Clinical implications of generalized electrographic status epilepticus.Epilepsy Res. 19:111–122.
Ellis, J.M., and Lee, S.I. (1978). Acute prolonged confusion in later life as an ictal state.Epilepsia 19:119–128.
Fagan, K.J., and Lee, S.I. (1990). Prolonged confusion following convulsions due to generalized nonconvulsive status epilepticus.Neurology 40:1689–1694.
Grand'Maison, F., Reiher, J., and Leduc, C.P. (1991). Retrospective inventory of EEG abnormalities in partial status epilepticus.Electroenceph. Clin. Neurophysiol. 79:264–270.
Granner, M.A., and Soo, J.K. (1994). Nonconvulsive status epilepticus: EEG analysis in a large series.Epilepsia 35:42–47.
Guberman, A., Cantu-Reyna, G., Stuss, D., and Broughton, R. (1986). Nonconvulsive generalized status epilepticus: clinical features, neuropsychological testing, and long-term follow-up.Neurology 36:1284–1291.
Kannel, W.B., Brand, N., Skinner, J.J. Jr., Dawber, T.R., and McNamara, P.M. (1967). The relationship of adiposity to blood pressure and development of hypertension: the Framingham study.Ann. Int. Med. 67:48–59.
Karnaze, D.S., and Carmel, R. (1990). Neurologic and evoked potential abnormalities in subtle cobalamin deficiency states, including deficiency without anemia and with normal absorption of free cobalamin.Arch. Neurol. 47:1008–1012.
Lindenbaum, J., Healton, E.B., Savage, D.G., Brust, J.C., Garrett, J.J., Podell, E.R.et al. (1988). Neuropsychiatric disorders caused by cobalamin deficiency in the absence of anemia or macrocytosis.New Engl. J. Med. 318:1720–1728.
Scott, J.M., Dinn, J.J., Wilson, P., and Weir, D.G. (1981). Pathogenesis of subacute combined degeneration: a result of methyl group deficiency.Lancet 2:334–337.
Shapiro, I.M., Neufeld, M.Y., Korczyn, A.D. (1990). Seizures of unknown origin after the age of 50: vascular risk factors.Acta Neurol. Scand. 82:78–80.
Singh, B.M., and Strobos, R. (1980). Epilepsia partialis continua associated with non-ketotic hyperglycemia: clinical and biochemical profile of 21 patients.Ann. Neurol. 8:155–160.
Thomas, P., and Andermann, F. (1994). Late-onset absence status epilepticus is most often situation-related.In Idiopathic Generalized Epilepsies: Clinical, Experimental and Genetic Aspects (Malafosse A. et al., eds), John Libbey & Company Ltd., London, pp. 95–109.
Thomas, P., Beaumanoir, A., Genton, P., Dolisi, C., and Chatel, M. (1992).De novo absence status of late onset: report of 11 cases.Neurology 42:104–110.
Tomson, T., Lindbom, U. and Nilsson, B.Y. (1992). Nonconvulsive status epilepticus in adults: thirty-two consecutive patients from a general hospital population.Epilepsia 33:829–835.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Aguglia, U., Gambardella, A., Oliveri, R.L. et al. De novo epileptic confusional status in a patient with cobalamin deficiency. Metab Brain Dis 10, 233–238 (1995). https://doi.org/10.1007/BF02081028
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02081028