Objective: To report a 6-year-old boy with post-chicken pox purpura fulminans (PF). Clinical Presentation and Intervention: A 6-year-old boy presented with purpura of the legs that rapidly progressed to other parts of the limbs and the buttocks. The patient had had chicken pox 10 days prior to presentation. He was afebrile and the chicken pox lesions were dry. He received anti-coagulants, a large volume of fresh frozen plasma, immunoglobulin and steroids. The skin lesions regressed but both hands and parts of the lower limbs remained necrotic; the patient was transferred to an orthopaedic hospital for amputation and skin grafting. Conclusion: This case report shows that PF can occur as a post-infection syndrome after primary varicella. Early and aggressive treatment of post-chicken pox PF might reduce the mortality and morbidity associated with this condition.