Functional disorders are considered to be the first manifestations of vertebrogenic disease, with first symptoms appearing at a young age. In a total of 57 children's migraine cases, 48 had excellent results after manipulative therapy. Functional disorders in children may manifest themselves as sleep disorders, loss of appetite, psychic problems, dysmenorrhea and may not exist as spinal pain. Studies on healthy children revealed pelvic subluxations in 40% of all school children, cervical fixation in 15.8%. After manipulative treatments, the problems rarely recurred.
Lewit K. Manuelle Therapie, J.A. Barth, Leipzig, 1973. Chap.2.7. Pp.50-54.