26th April 2024

A 48-year-old man presents with a 3-month history of persistent, worsening headaches, more severe in the morning.

A 48-year-old man presents with a 3-month history of persistent, worsening headaches, more severe in the morning. He has recently experienced two episodes of seizures. He also reports subtle changes in his personality and memory lapses. There is no significant past medical history of note.

Investigations:

Neurological examination: Altered mental status and right-sided weakness

Which is the most likely diagnosis?