Introduction: Dimethyl-fumarate is a recently approved drug for relapsing-remitting Multiple Sclerosis in Italy.
Clinical case: A 55-year-old woman started therapy with dimethyl-fumarate on June 2014; it was well-tolerated aside from moderate flushing. Starting September 2014 she noticed a progressive hair loss, that neither the dermatological examination nor clinical and medical history nor blood investigations could explain. The hair loss slowed down after two months and was followed by a hair growth back.
Discussion: Transient hair loss is not a reported side effect of dimethyl-fumarate therapy but by excluding any known cause we attributed it to the beginning of the new therapy.
Keywords: Dimethyl-fumarate; Disease modifying therapies; Hair loss; Multiple sclerosis; Side effect.
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