Which fictional disease does House M.D. character Amber Volakis contract after a bus accident?

Amber Volakis contracts amantadine toxicity after a bus accident in House M.D.

The storyline unfolds in the two-part season-four finale, “House’s Head” and “Wilson’s Heart.” Amber is exposed to amantadine, an antiviral medication, after taking House’s pills on a bus. The bus crash prevents the drug from being eliminated normally because her kidneys are damaged, allowing toxic levels to build in her body.

The diagnosis is medically significant because amantadine toxicity can affect the nervous system and heart. The episode uses House’s impaired memory after the crash to reveal the events gradually, linking the diagnostic mystery to the emotional consequences for James Wilson, Amber’s partner.

The condition is sometimes misremembered as Wilson disease because the character’s closest relationship is with James Wilson. They are unrelated: Wilson disease is an inherited disorder of copper metabolism, while Amber’s illness is medication toxicity caused by amantadine accumulation.