A 37-year-old woman with hyperthyroidism and asthma has frequent asthma attacks, requiring inhalational albuterol and epinephrine. Her attacks are occurring several times per week. Her most recent blood tests reveal elevated \(T_3\) and \(T_4\) levels twice the normal values. These levels significantly increased from her last laboratory studies 6 months ago. What is the most likely explanation for these findings?

A 37-year-old woman with hyperthyroidism and asthma has frequent asthma attacks, requiring inhalational albuterol and epinephrine. Her attacks are occurring several times per week. Her most recent blood tests reveal elevated \(T_3\) and \(T_4\) levels twice the normal values. These levels significantly increased from her last laboratory studies 6 months ago. What is the most likely explanation for these findings?

A 78-year-old man with generalized anxiety disorder and mild dementia is being seen by his primary care physician. Physical examination of the heart, lungs, and abdomen are within normal limits. Which of the following would be the best treatment option for his generalized anxiety disorder?

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?