Rapidly Progressing Sporadic Creutzfeldt-Jakob Disease Presenting as a Stroke.

Sporadic Creutzfeldt-Jakob disease (sCJD) is a rare, fatal human prion disease that is characterized by progressive dementia and neurologic degeneration. It can mimic multiple other neurological disorders, and a high index of clinical suspicion is necessary to make a diagnosis. A 74-year-old woman with a 3-month history of a stroke and progressive neurologic deterioration was found to have sCJD. She expired within a week of her diagnosis. Autopsy revealed spongiform encephalopathy consistent with prion disease, and genetic analysis revealed 129 polymorphism and no pathologic mutation, confirming the diagnosis of nonfamilial human prion disease. No pathologic evidence of a stroke was found. Awareness of the disease by clinicians is important not only at the time of initial presentation but also during the following months. Since there is no treatment, invasive medical procedures should be limited to only those that are required for either diagnosis or hospice care.