A 58-year-old woman with multiple sclerosis presents to her primary care physician for follow-up. She ambulates well and has few issues with her disease. Which of the following agents may be beneficial in slowing the progression of this disease?

A 58-year-old woman with multiple sclerosis presents to her primary care physician for follow-up. She ambulates well and has few issues with her disease. Which of the following agents may be beneficial in slowing the progression of this disease?

A 39-year-old man with recurrent epileptic seizures presents to his primary care physician for follow-up. He has no pertinent past medical, surgical, or family history in relation to his seizures. CT scan of the head reveals normal cerebral and cerebellar structures. There is no evidence of hydrocephalus. What is the most likely explanation of this patient's seizures?

A 16-year-old boy is brought to the urgent care clinic after suffering an episode of lip smacking followed by stiffness and convulsions. His mother explains that this is the third such attack in the past 2 years and that each attack has lasted about a minute. The pediatrician prescribes carbamazepine to control his seizures. What is the mechanism of action of this agent?

A 29-year-old woman who has been diagnosed with multiple sclerosis presents to her primary care physician with muscle rigidity and spasms. She also complains of difficulty sleeping, heartburn, and muscle pain. One of the drugs her physician prescribes is baclofen. Which of the following will baclofen do for this patient?

A 29-year-old man with spinal cord injury and with chronic gastric immotility syndrome has failed therapy with numerous cholinoimimetic agents. He has begun on therapy with physostigmine. Unfortunately, a supratherapeutic dose is administered to the patient. Which of the following effects must the treating physician be aware of?