This 9 years old female child presented with history of the lesions

This 9 years old female child presented with history of the lesions (in the image ) started after the drying of papular lesions ( which appeared suddenly 1 mo back only on trunk and remained for a span of three days associated with mild itching but no fever ) .

The patient is also having pallor since the lesions got dried.

Rest of the systemic exam is normal.

On CBC pt is having bicytopenia.

DDX ?