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Paroxetine for Depersonalization Associated With Multiple Sclerosis

To the Editor: Psychiatric symptoms are often found in patients with multiple sclerosis, even before the typical neurological manifestations of the disease appear (1). A substantial proportion of the patients with multiple sclerosis also suffer from paroxysmal phenomena such as dysarthria, ataxia, tonic seizures, dysesthesias, akinesia, pain, or depersonalization (2).

Mr. A was a 22-year-old student who was seen with paroxysmal depersonalization that had lasted for 6 weeks; he had episodes that lasted from seconds up to 20 minutes. When he was examined, we found left facial dysesthesia, paroxysmal myoclonia, visual impairment, and disturbances of concentration. Oligoclonal banding and multiple periventricular white matter lesions were found with magnetic resonance tomography; possible multiple sclerosis was suggested. Methylprednisolone, given intravenously and tapered orally, however, did not improve his symptoms. Treatment of his paroxysmal depersonalization was begun with carbamazepine, 400 to 600 mg/day; plasma levels of 6–10 mg/liter were achieved. There was a mild improvement in the frequency of his symptoms (from 6–10/day to 2–3/day) and in the severity of his depersonalization attacks.

After 2 months, Mr. A’s treatment with carbamazepine had to be stopped because of a rash. His depersonalization worsened, and he had to be treated with valproic acid. However, to achieve an adequate plasma concentration of the drug (more than 50 mg/liter), a dose of 1800 mg/day was necessary; this resulted in marked sedation accompanied by only a slight improvement of his depersonalization symptoms. Therefore, paroxetine was added, 10 mg/day, and his dose was increased weekly to 40 mg/day, whereas his treatment with valproic acid was discontinued. In the third week of his paroxetine treatment, Mr. A’s depersonalization attacks started to improve. After 4 months of treatment, they occurred only once or twice a week and had markedly decreased intensity. His social withdrawal disappeared as well, and Mr. A started his leisure activities again. However, the facial dysesthesia, myoclonia, and subjective disturbances of concentration persisted. Because of restlessness and sleep disturbances, his paroxetine dose was reduced to 30 mg/day. Two years after the onset of the disease, an acute relapse with neurological symptoms accompanied by typical changes in magnetic resonance tomographic and CSF findings led to the diagnosis of clinically definite, laboratory-supported multiple sclerosis (3).

Paroxysmal depersonalization, facial dysesthesia, myoclonia, and subjective disturbances of concentration are described as the first symptoms of longitudinally diagnosed multiple sclerosis. Despite reports that paroxysmal phenomena in multiple sclerosis respond to carbamazepine and other anticonvulsants (2), This patient’s depersonalization was reduced only a limited degree. Besides the effectiveness of selective serotonin reuptake inhibitors (SSRI) in depersonalization disorder (4), our report emphasizes that depersonalization due to a general medical condition like multiple sclerosis may respond to SSRI treatment as well.

REFERENCES

1. Skeeg K, Corwin PA, Skeeg DCG: How often is multiple sclerosis mistaken for a psychiatric disorder? Psychol Med 1988; 18:733–736
2. Twomey JA, Espir MLE: Paroxysmal symptoms as the first manifestations of multiple sclerosis. J Neurol Neurosurg Psychiatry 1980; 43:296–304
3. Poser CM, Paty DW, Scheinberg L, McDonald I, Davis FA, Ebers GC, Johnson KP, Sibley WA, Silberberg DH, Tourtellotte WW: New diagnostic criteria for multiple sclerosis: guidelines for research protocols. Ann Neurol 1983; 13:227–231
4. Hollander CG, Liebowitz MR, DeCaria C, Fairbanks J, Fallon B, Klein DF: Treatment of depersonalization with serotonin reuptake blockers. J Clin Psychopharmacol 1990; 10:200–203

This article has been cited by other articles:

				N. Medford, M. Sierra, D. Baker, and A. S. David Understanding and treating depersonalisation disorder Advan. Psychiatr. Treat., March 1, 2005; 11(2): 92 - 100. [Abstract] [Full Text] [PDF]

Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Email this article to a Colleague Similar articles in this journal Alert me to new issues of the journal Add to My Articles & Searches Download to citation manager Citing Articles via HighWire Citing Articles via Google Scholar Articles by STRÖHLE, A. Articles by SONNTAG, A. Search for Related Content Articles by STRÖHLE, A. Articles by SONNTAG, A. Dissociative Disorders Syndromes Secondary to General Medical Disorders Other Neuroleptics

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