Sporadic Creutzfeldt-Jakob Disease
Sporadic Creutzfeldt-Jakob Disease (CJD) is the most prevalent type of CJD, accounting for approximately 85% of cases. This form of the disease primarily affects individuals between the ages of 55 and 75. Unlike other types of CJD, sporadic CJD occurs spontaneously, without any known cause.
The progression of sporadic CJD is rapid, typically taking only a few months. One of the most common symptoms experienced by those with this disease is progressive dementia. Additional symptoms may include double or blurred vision, coordination difficulties, loss of balance, jerky movements, and muscle rigidity. Fatigue, headache, dizziness, changes in sleep and eating patterns, speech impairment, and unexplained weight loss are also observed in about one-third of individuals affected by sporadic CJD.
Due to the non-specific nature of many of these symptoms, diagnosing sporadic CJD can be challenging for medical professionals. In fact, it is not uncommon for this form of the disease to be mistaken for dementia.
Understanding Inherited Creutzfeldt-Jakob Disease
Inherited Creutzfeldt-Jakob Disease (CJD), also known as familial or genetic CJD, is responsible for approximately 10 to 15% of all CJD cases. This specific form of the disease primarily affects individuals between the ages of 30 and 55, distinguishing it from sporadic CJD which typically occurs in older individuals.
Compared to sporadic CJD, inherited CJD progresses at a slower rate. While the symptoms and signs of the disease resemble those of other forms of CJD, it may take one to two years for inherited CJD to fully manifest.