An 8-Year-Old Boy Is Brought to the Office Due to Severe

An 8-year-old boy is brought to the office due to severe behavioral problems.  The patient has been suspended from school on two occasions over the past year due to running around in the classroom and talking back to his teachers.  His parents report that he is "in constant motion" and are concerned about his poor grades and inability to follow directions or household routines.  The patient has a history of mild asthma and no other medical problems.  There is a family history of schizophrenia in a maternal uncle.  Physical examination shows marked fidgeting and difficulty staying seated but is otherwise normal.  The boy frequently interrupts his mother while she speaks with the physician.  Treatment with methylphenidate is recommended.  The parents should be educated about which of the following regarding this medication?

A) Acute dystonia
B) Decreased appetite and weight loss
C) Delayed onset of action
D) Polyuria and polydipsia
E) Increased appetite and weight gain
F) Initial worsening of symptoms
G) Life-threatening rash
H) Sedation