A case of an elderly woman with dementia showing episodic involuntary movement of the tongue
2014
: We report a 93-year-old woman with dementia who developed generalized convulsion and involuntary movement of her tongue. She could independently walk and eat meals until 8 months ago, however she turned into bedridden. When she was admitted to our emergency room due to status epilepticus, her tongue intermittently moved from the midline to the left. She could not eat or speak during this episodic tongue movement. MR imaging study revealed brain atrophy in the bilateral mesial temporal lobe, consistent with senile dementia of Alzheimer type. Despite her tongue movements seemingly developing to the generalized convulsion, EEG study did not indicate epileptiform discharges corresponding to this movement. Although antiepileptic drug therapy was effective, we needed polytherapy to control this movement. Paroxysmal tongue movements were previously reported in cases of epilepsy, brain tumor, and stroke, observed bilaterally in most cases. This episodic tongue movement would be rare in terms of the clear laterality. The etiology of this movement was presumed as focal seizure, palatal tremor, dyskinesia or others, but was undetermined. Episodic movements involving tongue decrease the quality of daily life especially in the elderly. Therefore, we should pay more attention to it and try to treat it earlier.
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