👉A sacral dimple is a small indentation on a newborn’s lower back, and most are harmless. 👉It’s a relatively common birthfinding that can be a sign of a serious underlying spinal issue if it’s large, deep, located away from the midline, or accompanied by other signs like a tuft of hair, skin tag, or discoloration. We examine it physically and may order an ultrasound or MRI to check for problems like a tethered spinal cord. 👉Harmless vs. potentially serious 🏵️Typically harmless: A simple sacr