A 6-year-old involved in a bicycle crash has a right tibia and fibula fracture that has been casted. Which of the following are early signs of compartment syndrome in this child? Select all that apply.

Rationale: A. Edema (swelling) within the confined space of the cast is an early sign of compartment syndrome and can compromise circulation. B. Numbness or tingling (paresthesia) is an early neurovascular sign indicating compromised nerve function. C. Severe, unrelenting pain, especially pain not relieved by analgesics or pain with passive movement, is one of the earliest and most reliable signs of compartment syndrome. D. A macular rash is not related to compartment syndrome and is not part of its clinical presentation.