In House M.D., which disease does Remy Hadley eventually test positive for?

In House M.D., Remy Hadley eventually tests positive for Huntington’s disease.

Remy Hadley, better known as Thirteen, learns that she carries the genetic mutation associated with Huntington’s disease. Huntington’s is an inherited neurodegenerative disorder caused by a mutation in the HTT gene. It can produce involuntary movements, psychiatric symptoms, and progressive cognitive decline, usually beginning in adulthood.

The storyline is especially significant because Thirteen has a family history of the disease and initially faces uncertainty about whether she will develop it. The show returns to the condition across multiple episodes, connecting medical facts with questions about identity, prognosis, relationships, and reproductive decisions.

This condition is easy to confuse with Wilson’s disease because both are named after physicians and can affect movement. Wilson’s disease involves abnormal copper accumulation and is a different disorder. Thirteen’s diagnosis is Huntington’s disease, an inherited condition associated with a characteristic CAG-repeat mutation.