A diagnosis of probable CJD requires an extensive exclusionary work up. The mnemonic device “VITAMINS” highlights other potential causes of rapidly progressive dementias:
- Vascular
- Infectious
- Toxic-metabolic
- Autoimmune
- Metastases/neoplasm
- Iatrogenic
- Neurodegenerative
- Systemic
It is important to rule out these conditions before confirming prion disease.