What Is Creutzfeldt-Jakob Disease?

With societal advancement and development, office workers increasingly adhere to rigid “9-to-5” schedules, and their stress levels continue to rise. Consequently, stress-related illnesses are becoming increasingly prevalent. So—what exactly is Creutzfeldt-Jakob disease (CJD)?

What Is Creutzfeldt-Jakob Disease?

Creutzfeldt-Jakob disease (CJD) is a chronic, progressive, and transmissible neurodegenerative disorder affecting the central nervous system. It occurs in both humans and animals. Its causative agent is the prion protein—a highly pathogenic agent that lacks nucleic acid yet possesses extraordinary infectivity. Prions are remarkably resistant to conventional sterilization methods: they withstand high temperatures, ultraviolet radiation, and most chemical disinfectants; they also remain viable under low temperatures and freezing conditions. CJD is highly infectious. Clinically, patients typically present with progressive cognitive decline, dementia, myoclonus (muscle jerks), and ataxia (loss of coordination). Onset usually occurs in midlife and progresses slowly; in some cases, the incubation period may extend up to 30 years. Transmission can occur via exposure to infected bodily fluids or blood, or through contaminated surgical instruments. Prognosis is poor: once symptomatic, most patients succumb within 1–2 years.

Histopathologically, CJD is characterized by the presence of abnormal prion protein deposits in brain tissue. Sporadic CJD—the most common form—relies primarily on clinical presentation, electroencephalography (EEG), and neuropathological examination for diagnosis. In current clinical practice, definitive diagnosis is achieved either by detecting pathological prion protein accumulation in brain tissue via biopsy or autopsy, or by identifying characteristic clinical and laboratory findings—including specific EEG patterns and cerebrospinal fluid biomarkers.

We hope this response has been helpful to you.