Creutzfeldt–Jakob disease
Creutzfeldt–Jakob disease (pronounced  ) or CJD is a neurological disease.  It is degenerative (it gets worse over time); it cannot be cured, and it always causes death. CJD is sometimes called a human form of "mad cow disease" (bovine spongiform encephalopathy, or BSE).  BSE is actually a cause of one rare type of Creutzfeldt–Jakob disease; the two are not the same disease.