Image of the Week: This condition mimics Parkinson's disease

A 69-year-old man presents with parkinsonian symptoms. A midsagittal MRI of the brain demonstrates a hummingbird sign consistent with prominent midbrain atrophy. Parkinsonian symptoms and this imaging help make a diagnosis of progressive supranuclear palsy (PSP). Which of the following symptoms is not typically associated with PSP? Learn more about this case, take the quiz, and join the conversation on ...