ABSTRACT
For each of the following scenarios, select the most appropriate cause of dementia. Each option may be used once, more than once or not at all.
1. A 73-year-old man presents with a 6-month history of worsening forgetfulness and intellectual decline. He has, however, had frequent episodes of relative lucidity during this period. He tries to chase soldiers that he thinks he sees in the garden, but his gait has markedly slowed down. His sleeping pattern is now irregular.
