case_images: PMC9715335_01
case_images: Platelet count at baseline (2 months before), since the last interferon beta-1a injection before the occurrence of petechial lesions (IFNbeta-1a, D0) and upon rechallenge (D14), and their evolution with subsequent treatments. Prednisone (PDN) is only shown when 1 mg/kg has been initiated. Two administrations of intravenous immunoglobulins (IVIG, 2 g/kg total dose) were performed.
case_images: CRIHEM2022-2767031.001.jpg
case_images: PMC9715335_01_CRIHEM2022-2767031.001.jpg
case_images: fig1
case_images: The last IFNbeta-1a injection was three days before the onset of symptoms (Figure 1, D0, platelet count 152 G/L). After 24 hours, the platelet count rose to 57 G/L (Figure 1) and progressive platelet normalization allowed the patient to be discharged after six days.