[Patient with Crohn's disease and seizures due to hypomagnesemia].

We report a patient with Crohn's disease who suffered several generalized convulsions. He was studied with cerebral image techniques and neurophysiologic tests without getting the aetiology of the convulsions. A severe depletion in magnesium levels was suspected at the time of the initial evaluation by the Nutritional Team Group. Low serum magnesium levels were confirmed in the first blood test. Convulsions disappeared when magnesium was normalised by intravenous infusion. It is necessary for specialist physicians to be on the alert of severe complications of nutrients deficiency and that this kind of patients should be checked by the Nutrition Team.