This case shows that skin color may affect dermoscopic findings in alopecia areata. In our African-American patient with alopecia areata dermoscopy showed a diffuse honeycomb-like pigmented network, which was previously considered characteristic for androgenic alopecia and white dots, which were considered characteristic for cicatricial alopecia. Further studies are needed to elucidate the presence of white dots in alopecia areata.
Anti-CD20 monoclonal antibody has been successfully used to treat several self-immune diseases. The authors report the case of a 71 year-old female patient under the use of pegylated form of interferon á associated with ribavirin for the treatment of hepatitis C, who, after concluding the therapeutic program - negative Polymerase Chain Reaction (PCR) - developed a severe cutaneous vasculitis, receiving the diagnostic of type II mixed cryoglobulinemia. Four sessions of plasmapheresis were prescribed along the period of 11 days, with no result. The choice made was to administer anti-CD 20 monoclonal antibody (rituximab), 375 mg/m(2), per week, during four consecutive weeks. One could observe fast recovery from the purpura, as well as total remission of urticaria.
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