Fluctuant scalp mass with poorly demarcated borders extending into the neck should raise concern for which complication?

• A. Hyperbilirubinemia
• B. Hypoglycemia
• C. Sepsis
• D. Hypovolemia shock

Answer: (D)

This pattern points to subgaleal hemorrhage, a dangerous neonatal scalp bleed that occurs when emissary veins in the subaponeurotic space rupture during delivery. The mass is large, fluctuant, and poorly demarcated, often crossing scalp sutures and sometimes extending into the neck. Because blood can pool in this potential space, a substantial volume loss can occur quickly, leading to hypovolemic shock if not identified and treated promptly. While hyperbilirubinemia, hypoglycemia, and sepsis are important neonatal concerns, they do not explain the rapid, large-volume blood loss and imminent circulatory instability seen with subgaleal hemorrhage. Early recognition and aggressive resuscitation with fluids and blood products are critical to survival.