A 76-year-old man who presented with subacute onset of inability to care for himself, memory decline, frequent drowsiness and lethargy, visual hallucinations, repeated falls, and blood pressure fluctuations. His symptoms were pronounced to the point that they could be mistaken for delirium. Myoclonic jerks, rigidity, and tremors were soon noted. CBC, electrolytes panel, thyroid profile, B12, ESR, RPR, Lyme titer, ceruloplasmin, as well as serum protein electrophoresis, ammonia levels, and heavy metal screening were unremarkable. MRI of brain indicated mild-to-moderate, age-appropriate atrophy. Carotid/vertebral artery Dopplet revealed no stenotic abnormalities. EEG showed diffuse slowing. Lumbar puncture was negative. CT of the chest, abdomen, and pelvis showed no acute pathology. On cognitive testing, he exhibited a greater degree of visuoperceptual, visual memory, constructional, and attentional impairment.