●●●●● ●●●● What are the symptoms of vCJD?999 e The disease affects all age groups and is very hard to diagnose until it has nearly run its course. In its early stages, people have symptoms related to the nervous system, like dementia and jerking muscle movements. But only in advanced stages of the disease can brain abnormalities be detected by X-ray or MRI (magnetic resonance imaging)What are the symptoms of vCJD? ⚫ The disease affects all age groups and is very hard to diagnose until it has nearly run its course. In its early stages, people have symptoms related to the nervous system, like dementia and jerking muscle movements. But only in advanced stages of the disease can brain abnormalities be detected by X-ray or MRI (magnetic resonance imaging)