An 82-yeаr-оld pаtient is brоught tо the clinic by their dаughter, who reports that over the past month the patient has had intermittent severe headaches, occasional weakness that “switches sides,” and is now having periods of irritability and forgetfulness. The daughter mentions the patient “bumped their head” getting out of the car about 6 weeks ago but did not lose consciousness and seemed fine afterward. Based on this presentation, which condition should the nurse suspect?