A 66-year-old presents to ED with functional and cognitive decline
Kevin, a 66-year-old previously independent retired social worker, is brought to ED with a one-month history of progressive cognitive changes and functional decline.
His wife describes him as becoming unusually short-tempered, combative and agitated.
He is sleeping poorly, has developed a ‘clumsy gait’, is less verbal and losing skills such as the ability to shower and dress himself.
Around the time of initial symptom onset, he had a seizure and levetiracetam was started.
His background medical history is