Hi Erik,
My case study is about recurrent abdominal pain in children and an associated symptom is headaches. While acupuncture hasn't been studied in relation to the abdominal pain, I see here that it has been studied in relation to headaches among adolescents. I'll have to look into this more for my case study too and see if there is anything more in elementary school children. Although, as Jazel brought up in one of her replies, acupuncture in younger children might be a more difficult research topic.
Thanks for this!
Patti