The final stage of CJD or Creutzfeldt-Jakob disease is where a person experiences a complete loss of physical and mental function, which leads to a coma and eventually death.
The symptoms of the final stage of CJD or Creutzfeldt-Jakob disease include total physical dependence where the person becomes completely bedridden and loses their ability to move independently.
Loss of communication, where the person loses their ability to speak or respond and often slips into a semi coma or full coma and unawareness where they become entirely unaware of their surroundings and they also have an inability to eat or swallow and nutritional intake and swallowing function cease.
And then finally the severe complications of the final stage of CJD or Creutzfeldt-Jakob disease, death often follows within a year of symptom onset, often caused by secondary infections like pneumonia or by respiratory failure.
Some people in the final stages of CJD or Creutzfeldt-Jakob disease may experience severe agitation and others have a calmer decline that is characterized by increased sleepiness and reduced responsiveness.
People who are most likely to get CJD or Creutzfeldt-Jakob disease are older adults between the ages of 55 and 75 years old, with the symptoms often starting in the late 60s.
Around 85% of cases of CJD or Creutzfeldt-Jakob disease are sporadic, which means that it develops randomly for no known reason and it is very rare and affects around 1 to 2 people per million people each year.
Sporadic CJD Creutzfeldt-Jakob disease, which is the most common type happens to people with no clear cause or family history and usually shows up in adults aged 60 to 70 and is caused by normal brain proteins that randomly change and misfold.
Familial or Inherited CJD Creutzfeldt-Jakob disease which is 5 percent to 15 percent of cases happens to people who have a family history of Creutzfeldt-Jakob disease and is tied to an inherited gene change (PRNP) that is passed down from a parent and often begins at a younger age than the sporadic type of Creutzfeldt-Jakob disease or CJD.
And acquired or variant CJD or Creutzfeldt-Jakob disease which is less than 1 percent of cases can affect younger people, including teenagers and is linked to eating meat from cattle with mad cow disease or very rarely through contaminated blood transfusions.
And Iatrogenic CJD happens through rare medical accidents, such as unsterilized surgical tools or specific tissue grafts.
CJD or Creutzfeldt-Jakob disease is a rare, rapidly progressive and fatal neurodegenerative brain disorder and is caused by an abnormal, misfolded protein called a prion, which accumulates in the central nervous system and most cases of CJD or Creutzfeldt-Jakob disease are sporadic and occur for no known reason, while other cases of CJD or Creutzfeldt-Jakob disease are genetic or acquired.
You can also have CJD for over 50 years without knowing it.
CJD also known as Creutzfeldt-Jakob disease can remain dormant in it's incubation phase for over 50 years before any symptoms of Creutzfeldt-Jakob disease or CJD appear.
Although the exact duration of time that someone may have CJD or Creutzfeldt-Jakob disease without knowing it will also depend heavily on the type of exposure and the specific strain of the disease.
Variant CJD (vCJD), acquired from contaminated meat, has an incubation period that often averages around 10 years to 15 years, although scientific estimates also suggest it can even stretch to 50 years to 56 years in some people.
Iatrogenic CJD, which is acquired via medical procedures like from contaminated surgical instruments or historical growth hormone treatments, the dormancy has been documented to range from as little as a few years to over 38 years to 50 years.
And for sporadic CJD, which is the most common form of CJD or Creutzfeldt-Jakob disease, has no known external exposure or long term dormant incubation phase and it arises spontaneously when normal proteins misfold into prions.
The way the CJD or Creutzfeldt-Jakob disease progresses is once the dormant prions trigger active brain cell damage and clinical symptoms manifest, the progression is then rapid.
Classic CJD or Creutzfeldt-Jakob disease is often fatal within 4 months to 5 months of symptom onset.
And variant Creutzfeldt-Jakob disease or CJD progresses slightly slow, with an average survival time of 13 to 14 months.
The odds of getting Creutzfeldt-Jakob disease (CJD) are extremely low, affecting about 1 to 2 people per million worldwide each year.
Risk and Statistics of CJD include:
Annual Odds: In the United States, this incidence rate equals roughly 350 to 500 new cases per year.
General Risk: According to the Centers for Disease Control and Prevention, your overall lifetime chance of developing the condition is roughly one in a million.
How CJD Develops:
Sporadic (85% of cases): Most people get Sporadic CJD for no known reason, typically when a normal brain protein spontaneously misfolds into a prion.
Hereditary (5% to 15% of cases): People inherit a genetic mutation in the prion protein gene from a family member.
Acquired (Less than 1% of cases): Transmission happens through exposure to infected brain or nervous system tissue during rare medical procedures, or via variant CJD from eating contaminated beef.