Abstract
Blueberry muffin baby is the characteristic distributed purpura occurring as a result of extramedullary hematopoiesis found in infants. The purpura are often generalized, but occur more often on the trunk, head, and neck. The name is from the superficial similarity to a blueberry muffin.
Causes
The condition was originally considered characteristic of rubella, but is now considered to be potentially associated with many other conditions, such as cytomegalovirus and metastatic neuroblastoma.