Dr Rank may be a doctor who is best friends of Torvald and Nora, whom he visits one day. Dr. Rank suffers from spinal tuberculosis, a condition he believes was caused by his father’s vices, including having extramarital affairs and consuming an excessive amount of luxurious food and drink. Dr. Rank is unmarried and lonely. It is revealed that he’s crazy with Nora. Cynical about life, he rejoices when he finds out that his illness is terminal, and insists that neither Torvald nor Nora visits him in his dying days.