At the beginning of the episode we see a chinese lady in a chinese temple trying to convince her biological parents that she is their biological daughter, but her biological father goes berserk and relucts to admit that. Here's one thing: If she is in China they should be speaking Chinese, not Cantonese. Unless they are in Hong Kong, but I'm pretty sure she said she is in China.
Another thing that bugs me: why is she being treated for SARS? Patients with SARS develop severe lung problems and high fever. She only has a cough and abdominal pain. I'm not a medical student so I don't know if this is a medical error.
Besides that, everything is great. I like everything from the scene where Cuddy drugs House till the end of the episode. My favourite episode so far.
Final diagnosis: Metal pins in brain displaced by magnet.