Answer to Question 1
A
Methylphenidate is contraindicated in patients who have motor tics or a diagnosis of Tourette's syndrome. Decreased appetite, occasional headaches, and changes in blood pressure are not concerning.
Answer to Question 2
B
Exacerbation of behavioral and processing symptoms can occur in patients with preexisting psychosis, and manic and behavioral symptoms may occur in patients who do not have an underlying psychiatric disorder. This is true with all stimulant medications, so increasing the dose, switching to another stimulant, or switching to a long-acting form are not indicated.