"Birthmarks"'s the fourth episode of the fifth season of House and the ninetieth episode overall. It aired on October 14, 2008. Plot A 25 year-old Chinese woman, adopted by American parents, seeks out her birth parents in China, but they dismiss her, stating they never had a daughter. While praying and lifting up a small Buddha statue, she collapses, vomiting blood and claiming stomach pain. She's brought back to America and treated at Princeton-Plainsboro Teaching Hospital. Meanwhile, when Hou… (More on Birthmarks)