Anna Elisabeth Kosak was born in Vienna, capital of the Austro-Hungarian Empire, on 30 March 1905. Her family moved to Bregenz when World War I started in 1914 and she attended the localgymnasium there. Hitzenberger wanted to study medicinedespite her parents' preference for acting or writing, so they compromised on philology and history in her first year of university. Unhappy, she chose to pretend to take more of the same for her second year, but secretly took medical classes, much to her parents' displeasure. She ultimately was awarded her M.D. degree by the University of Vienna in 1931.