Abstract：
INTRODUCTION:Although visual symptoms of multiple sclerosis (MS) are very frequent, they are rarely related with treatment with interferon. This is the first case reported in the literature of retinopathy associated with subcutaneous interferon beta-1a, and the second related to interferons in MS. CASE REPORT:A 30-year-old female diagnosed with relapsing-remitting MS who, at 3 months after starting treatment with subcutaneous interferon beta-1a (44 microg/3 times a week), displayed visual disorders. Retinal lesions in the form of cotton wool spots were found as symptoms of microinfarctions in the retina. The lesions got better after stopping treatment and the patient was found to be asymptomatic. CONCLUSIONS:The existence of retinopathy secondary to interferon has been known in the treatment of hepatitis C and neoplasias with interferon alfa since 1990. Despite being a frequently occurring complication, it is usually a mild condition and disappears on withdrawing treatment, or even if it is continued. It is attributed to deposits of immunocomplexes and complement activation in the blood vessels of the retina. Only one other case associated to treatment of MS with interferon beta has been reported in the literature, more specifically related to subcutaneous interferon beta-1b. The clinical characteristics of both cases are identical to those associated to interferon alfa. Despite the fact that the frequency of appearance seems to be lower than in the case of interferon alfa, the physician must bear in mind the possibility encountering this complication.
journal_name
Rev Neuroljournal_title
Revista de neurologiaauthors
Mallada-Frechín J,Abellán-Miralles I,Alfaro-Beltra ML,Medrano V,Muñoz-Gil MB,Fernández-Izquierdo S,Piqueras-Rodríguez Lsubject
Has Abstractpub_date
2005-04-16 00:00:00pages
482-4issue
8eissn
0210-0010issn
1576-6578pii
rn2005132journal_volume
40pub_type
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