Interferon Beta-1a Overdose in a Multiple Sclerosis Patient
2005
OBJECTIVETo report on a patient with multiple sclerosis (MS) who attempted suicide by taking an overdose of interferon (IFN) beta-1a.CASE SUMMARYA 38-year-old man with MS and depressive symptoms self-administered approximately 6 or 7 prefilled syringes containing 44 μg (12 MIU) of subcutaneous IFN beta-1a in a suicide attempt. Clinical examination in the emergency department revealed a modest rise in body temperature and diffuse redness of the skin of the limbs and truncal region. The patient's signs and symptoms resolved over the following 24 hours. IFN beta-1a was temporarily withdrawn and treatment with citalopram, which the patient had spontaneously discontinued before the suicide attempt, was resumed. Laboratory assessment showed no modifications in biochemical and hematologic parameters. The IFN beta-1a concentration in the serum sample taken at 48 hours after the suicide attempt confirmed that the patient had taken a very high dose of IFN.DISCUSSIONDepression, a common condition in MS patients, was...
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