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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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  • 40% of cases affect children less than 10 years old
  • in childhood disease males and females affected equally
  • in childhood disease the onset is typically abrupt, with severe thrombocytopaenia, and spontaneous remission occurring in 80% of cases
  • in adult disease, females affected more often than males; 70% of these women are less than 40 years old

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