Quiz 07/27/2022 (8)

A 5-year-old male presents because of muscle stiffness. His symptoms are worse during the colder winter months and with gym class at school. He sometimes becomes so stiff he can hardly breathe. Examination shows no muscle atrophy or hypertrophy but myotonia is present. Upon further questioning, you learn he has an older brother with similar symptoms. What is the likely dysfunctional gene in this patient?

A 71-year-old female with a past medical history of hypertension presents to the clinic with a 1-year history of a progressive right tremor. She only notices the tremor when she is sitting still. On physical exam, you notice that her movements are not smooth, and she seems rigid in her extremities. She also demonstrates a slow, shuffling gait. This patient’s condition is most likely due to the loss of which neurotransmitter?

Which of the following is most consistent with this EEG tracing?

Based on the EEG shown below, how old is this patient?

A 38-year-old female presents for 5 weeks of worsening encephalopathy, and blurred vision. An MRI Brain with contrast is performed and shown below (T1 post-contrast, multiple axial sections). Of the following, what is the most likely diagnosis?