MSFinals-5322
A 72-year-old female visits her GP due to concerns about memory loss. She has been experiencing forgetfulness and absent-mindedness for the past three weeks. She cannot recall conversations that occurred earlier in the day and has forgotten to lock her front door. Additionally, she has been feeling fatigued and has lost interest in her usual activities, such as going out for walks. Living alone, she is worried about the potential risks associated with her memory loss. Although initially appearing cheerful, she becomes emotional and starts crying while discussing her symptoms. The following blood test result is obtained: TSH 2 mU/L. What is the most probable cause of her presentation?