Easy bruising in children with petechiae are pinpoint-sized purple-red spots on the skin that can be a concerning issue. These can be caused due to various causes like accidental trauma, viral infections like Epstein-Barr virus, cytomegalovirus, blood disorders like hemophilia, thrombocytopenia, and medications like NSAIDs, anticoagulants, and antibiotics, and also rare blood cancer. Leukemia can also cause bruising with petechiae.