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A two-week-old, full-term female with an uncomplicated delivery is brought to the clinic with abnormal jerky movements. Her father states that episodes occur right after the patient is put down for a nap, last for roughly 3 minutes, and resolve with arousal. During the episodes, the patient has rapid, repetitive myoclonic movements of her upper limbs. The physical exam is unremarkable. The patient was admitted to the Epilepsy Monitoring Unit where a typical event was captured and had no EEG correlate. Which of the following is the most likely diagnosis?
Mild cases of carpal tunnel syndrome will have which of the following findings on electromyography (EMG)?
389 Patients who had acute unilateral optic neuritis were enrolled between 1988-1991 in a study and followed for 15 years to assess their risk for developing multiple sclerosis (MS). They found that the probability of developing MS within 15 years was 50%. What type of study was this?
A 35-year-old man developed a right clavicle fracture after an accidental fall from a ladder while hanging Christmas lights. He was treated conservatively with a figure-of-eight bandage and sling. He presents to your clinic 2 weeks after the accident. He states ever since the accident he has had right arm and shoulder pain, as well as numbness extending from his triceps to his middle dorsal aspect of the forearm, wrist, and dorsal aspect of digits 1,2 and 3. On examination, his strength is 5/5 throughout all extremities except 4/5 to abduction of the deltoid, extension of the triceps, and wrist extension.
Which nerve or cord, if injured by the clavicle fracture, would explain his symptoms?
A 27-year-old female with a history of cataracts and an unknown family history was referred to the neurology clinic for excessive daytime sleepiness. On examination facial weakness and grip myotonia were appreciated. Genetic testing revealed a mutation in the DMPK gene. Based on her diagnosis, which of the following tests should be performed annually?
A 13-year-old boy presents with worsening severe headaches, nausea, vomiting, sleepiness, and confusion. The symptoms have been episodic, improved somewhat by lying recumbent. An MRI is done and shows the following. Which of the following is the best treatment option?
Which of the following correctly identifies the cranial nerve(s) that transverse through the structure (blue arrow) shown below?
A 35-year-old Dominican Republic immigrant is brought to the emergency room for a first-time seizure. He is currently back to baseline and has a normal neurological exam. His only complaint is a multiple-month history of chronic headaches. A head CT scan is performed and shown below. Which of the following is the most likely etiology of his symptoms?
Which of the following muscles is innervated by the vagus nerve (CN X)?
Which of the following antiepileptic drugs can induce myoclonic seizures?
A previously healthy 14-year-old female presents to the emergency room after experiencing a trip and fall where she hit her head. She returns to baseline, but out of caution a CT head and subsequent MRI brain are performed in the ED. What is a potential complication caused by this lesion seen in this MRI?
Of the following, which region of the adult brain is most susceptible to hypoperfusion injury and ischemia?
A 49-year-old male with a chronic history of myalgias was referred to the EMG lab with progressive muscle weakness. Based on the EMG table shown below what is the most likely diagnosis?
A 25-year-old female presents with anisocoria; her right eye is significantly more dilated when compared to the left eye in ambient light. The right pupil is also irregular in shape, does not respond to light, and is sluggish to constrict to near accommodation. When dilute pilocarpine (0.125%) is administered to the right pupil it constricts but the left eye doesn’t react at all.
Which of the following is the most likely cause of the patients’ symptoms?
A 24-year-old female with a past medical history of major depressive disorder with her last major depressive episode 6 months ago is brought to the emergency room by her boyfriend because of unusual behavior. For the past 4 weeks, the patient has had bizarre delusions, auditory hallucinations, and disorganized speech. She believes that her boyfriend is having a sexual relationship with a character from one of the early morning soap operas on television. Outside of her psychiatric symptoms, her neurologic examination is normal. Which of the following is the most likely diagnosis?