INS and Lipoatrophy: Lipoatrophy (LA) can be congenital or aquired.1 Aquired LA is classified into idiopathic (primary) and secondary types.1 One cause of secondary LA is iatrogenic injury from subcutaneous, intramuscular, or intradermal injections.1 Injected substances include human growth hormone, steroids, insulin, and antibiotics.2–6