For those who missed this important pediatric study, a quick take ~2 min video link: Pediatric Migraine CHAMP Study
Related blog post: Topamax and Amitriptyline Did Not Work for Pediatric Migraines
My take: It looks like placebo did pretty well with >60% response rate. In a commentary on this subject, the authors noted that when patients are seen by the physician, the symptoms are often severe. So, some improvement is expected, in part, due to regression to the mean; that is, it is common to return to their baseline level of symptoms.