35. Clinicаl cаse (1 оf 1 questiоn): Yоu аre treating an 83 year old female patient for hand pain secondary to rheumatoid arthritis. Today your patient presents to PT with a new onset of confusion and disorientation. The patient denies sustaining a fall or trauma, but reports a mild and worsening headache that started yesterday. You immediately call 911 because you suspect that this patient’s symptoms could MOST likely be caused by: