A 37-year-old woman presents to the plastic surgery group for the second round of treatment to address her wrinkles. She complains that her right eyelid and forehead are 'too droopy' and has a persistent headache since her first Botox treatment 5 days ago. What is the mechanism of action for this treatment?

A 37-year-old woman presents to the plastic surgery group for the second round of treatment to address her wrinkles. She complains that her right eyelid and forehead are 'too droopy' and has a persistent headache since her first Botox treatment 5 days ago. What is the mechanism of action for this treatment?

A group of teenage boys present to the emergency department after ingesting a plant they heard would make them high. One member of the group still had some plant parts in his pocket, which you use to identify deadly nightshade. They present with xerostomia, dry eyes, flushed skin, blurry vision, and tachycardia. Which substance is likely causing their symptoms?

A 45-year-old man with a history of depression presents to the emergency department with priapism. He has had an erection for the past 2 h, and it is extremely painful. He is given pseudoephedrine and the erection subsides. What medication is the most likely cause of his priapism?

A 34-year-old woman with long-standing hypertension is taking an ACE inhibitor. She is now newly married. Which of the following potential adverse effects is most applicable to her at this time?

A 7-year-old boy is brought to the ambulatory care clinic by his mother because of acting out in class and at home. In class, he often talks out of turn and does not stay focused on tasks. At home, his mother cannot get him to do his chores, and he never sits still. What is the most appropriate treatment for this patient?