As a favor to his former girlfriend Stacy Warner, House drugs her husband Mark who refused to be examined by him. He's diagnosed with brain symptoms that seem to fit encephalitis or Alzheimer, but tests prove inconclusive. Chase found that he took amphetamines. Then a row with Stacy causes Greg to discover that Mark has erratic memory loss. He concludes porphyria is likely, but the only test to justify dangerous therapy is perilous, especially as Mark refuses to take the attack-inducing cocktail. Written by
Did You Know?
House orders a PET scan to study metabolic activity of Mark's brain. When Forman explains the procedure to Mark, he mentions that they are going to use FDDNP, a PET tracer not capable of revealing metabolic activity. Normally, FDG scan is used to visualize metabolic activity. See more
Dr. Eric Foreman
It's not paranoia if someone's out to get you.
You Can't Always Get What You Want
Written by Mick Jagger
and Keith Richards
Performed by The Rolling Stones See more