PMC9252296_01
Peripheral blood smear with normal RBC morphology and absent platelets.
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The peripheral blood smear, as presented in Figure 1, showed normal red blood cells (RBC) morphology, decreased number of leukocytes and absent platelets. 
Patient with wet purpura and petechias in the first 48 h since hospital admission.
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Adix moderate grade score with high risk of bleeding, treatment with intravenous methylprednisolone 1 mg/kg/day and platelet concentrate was administrated. After four doses of high-dose corticoid therapy, the hepatic and renal parameters returned within normal range, but the platelet count maintained the value of 0x103/muL, thus therapy with IVIG at a programmed dose of 1 g/kg/day for two days was administered, with immediate clinical and laboratory improvement (Figures 4 and 5, Table 2). 
Ecchymosis in the first 48 h since hospital admission.
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Patient on D-8 of hospital admission, with clinical improvement of wet purpura.
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Adix moderate grade score with high risk of bleeding, treatment with intravenous methylprednisolone 1 mg/kg/day and platelet concentrate was administrated. After four doses of high-dose corticoid therapy, the hepatic and renal parameters returned within normal range, but the platelet count maintained the value of 0x103/muL, thus therapy with IVIG at a programmed dose of 1 g/kg/day for two days was administered, with immediate clinical and laboratory improvement (Figures 4 and 5, Table 2). 
Clinical improvement of ecchymosis.
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Adix moderate grade score with high risk of bleeding, treatment with intravenous methylprednisolone 1 mg/kg/day and platelet concentrate was administrated. After four doses of high-dose corticoid therapy, the hepatic and renal parameters returned within normal range, but the platelet count maintained the value of 0x103/muL, thus therapy with IVIG at a programmed dose of 1 g/kg/day for two days was administered, with immediate clinical and laboratory improvement (Figures 4 and 5, Table 2). 