✅️Case
▪️6-month-old, full-term infant girl was brought to the emergency department after 3 days of having an asymptomatic, large, purple-red bruiselike rash
◽️ The rash first appeared on the patient’s thighs bilaterally before spreading rapidly to her face, abdomen and lower legs.
◽️She had an episode of acute viral gastroenteritis that had resolved 1 week earlier, but she was otherwise healthy.
◽️An examination of her skin showed medallionlike, well-defined ecchymoses (2–3 cm in diameter) with surrounding erythematous edematous plaques affecting the face, periumbilical area and extremities
◽️Results from laboratory tests showed hypocomplementemia.
◽️ A biopsy of the patient’s skin found perivascular infiltrate with numerous neutrophils, some eosinophils, nuclear dust, abundant extravasated erythrocytes and hemorrhage.
🔸️ Dx acute hemorrhagic edema of infancy